INSTRUCTION MANUAL FOR
Contents
1. C 20 3 0 2 Proof Strength Precracking 456 Temperature N mm O vsp Tensile Strength Precracking 508 Temperature N mm O TSP Figure 5 The More Data specimen parameters screen Run Test The test may be run only if the Main Screen parameters have all been entered only Part No is optional If the screen is incomplete or an invalid parameter has been entered a suitable warning message will be displayed when the Run Test button is clicked and the test will not be run Page 12 MAQ9 I Fracture Mechanics Precracking Instruction Manual 4 THE MAIN SCREEN MENU BAR The following section describes the features to be found on the pull down menus at the top of the Precracking Program Main Screen figure 1 Users who wish to access the menu bar without a mouse should note that the Alt key access keys which may be used within the main part of the screen do not give access to the menu bar To reach the menu bar use the function key F10 Once the menu bar is reached the menu selection may be made either by pressing a short cut key e g F to access the File menu or by using the cursor keys File menu The File drop down menu contains only one option which is Exit This closes the program Feedbacks menu Clicking on the Feedbacks menu displays a window with the stroke strain and load feedbacks in real time This facility is mainly provided as a quick visual check that system con2. It is also possible at this stage to tare off i e make the reading zero the measured value of load Page 6 MA9_1 Fracture Mechanics Precracking Instruction Manual Specimen Setup Please fit specimen Actuator STUPET Tare Load SETUP1 BMP Figure 2 The specimen setup window Precracking Oscillating Peak Load kN 35 a w 0 000 0 450 R Ratio 0 00 0 990 see ag 11 25 No of Load K value Cycles MPa m3 _ Frequency Hz 50 EBd P 44 30 Figure 3 The screen display while a test is running The next message to be displayed prompts the user to fit the clip gauge extensometer to the specimen Clicking the Cancel button will abort the test and return to the Main startup Screen Clicking No will return to the specimen setup window to allow the actuator to be positioned Click Yes to continue with the test The program now returns to the Run Screen figure 3 on which the test values will be displayed as the crack is grown Initially no values are shown Clicking the Start Test button will cause the system to ramp to an initial value of load Once this is achieved the load value will oscillate at the specified frequency while the amplitude and mean values are varied in order to maintain correct stress intensity and peak force levels To protect against the MA9_1 Page 7 S Wa Phoenix Calibration amp Services Ltd possibility that the sp
3. A title or label may have one character underlined The keystroke Alt character will select the parameter for example to select a box titled Mode press the M key while holding down the Alt key Some types of data entry box contain a button with a downward pointing triangle Y This may be operated by pressing Alt down arrow which MAQ9 I Page 15 Zi Wa Phoenix Calibration amp Services Ltd will open a drop down box of possible options for that parameter The up and down arrow keys may then be used to highlight an option which is then selected by tabbing away from the box or pressing Alt down arrow again Menu bar at the top of the working window is a strip bar containing menu names If the mouse is positioned on one of the menu names and the left button clicked a drop down menu appears To select an option from a drop down menu click on the option Alternatively place the mouse pointer over the menu to select it press the left mouse button and hold it down while pulling the mouse down to the required option The option is selected when the mouse button is released Short cut keys the menus on the menu bar also have underlined characters but are not accessed using the Alt character method Instead pressing F10 will select the menu bar then the underlined short cut keys or the left and right cursor keys may be used to select the required menu Short cut keys select and open a menu directly the cursor key method requir
4. performed with a constant value of stress intensity factor maintained by the program as the crack is grown The Reducing and Increasing options if applicable determine what the value of K will be at the end of the precracking and how often the value is changed during the crack growth Part No Unlike the other parameters shown on the Main Screen the Part No box need not be completed in order to run a test The box is provided only for convenience and any batch job or part number entered here will be printed at the end of the test The Part Number is also shown in the References Table and may be entered from the References Menu see Section 4 File Name The File Name box in the Results section should be completed with a name to be used for the test results file The file extension should not be entered as it is always forced to dat for data By default the dat results files are placed in the C PS Results folder If you wish to change this tab to or click on the Change File Path button This will open a dialogue box which will allow the required path to be entered An example of a data file is shown in Appendix 2 Specimen Type The Precracking Program may be used either with compact CTS or three point bend SEN specimens as selected from the drop down box If an SEN type specimen is in use then the span of the bend fitting will need to be entered in addition to the s
5. results file The file extension should not be entered as it is always forced to dat for data A typical entry in this box might be example1 to produce an output file called examplel dat The full file path is shown below this box By default the dat results files are placed in the C PS Results folder If you wish to change this tab to or click on the Change File Path button This will open a dialogue box which will allow the required path to be entered For this example the path is left unchanged In order to run a test the specimen mechanical details must be present The first information required is the Specimen Type Either Compact Tension Specimens CTS or three point bend Single Edge Notch SEN specimens may be used as selected from the drop down box The specimen dimensions must be entered in the Width Thickness and Notch Length boxes If an SEN type specimen is in use three point bend then the Span of the bend fitting will also need to be entered If there is any doubt about the orientation or exact meaning of these dimensions please refer to the relevant standard The final specimen detail required is the value of Young s Modulus for the material Once this has been entered the user may click the More Data button to open a dialogue box see figure 5 where further specimen parameters may be entered These values are required by the Fracture a
6. Fracture Mechanics Precracking Instruction Manual m Document MA9 1 Date 15 09 08 1 Precrarkag 1440 Bla Pesdzacto Tast Yarda Eaferencas Qpa Tabla Semi anges fado Gun EEE uan e Load th Marina Settings ul Part Hi SSES fave one engle bek eee Eege Phoenix Calibration amp Services Ltd Brick Kiln Street Harts Hill Brierley Hill West Midlands DY5 1JG UNITED KINGDOM Tel No 44 0 1384 480545 Fax No 44 0 1384 480602 E mail sales amp phoenixcalibration co uk reeracking Instruction Manual Web site http www phoenixcalibration co uk Wa Phoenix Calibration amp Services Ltd Trademark acknowledgements MS DOS and Microsoft Windows are trademarks of Microsoft Corporation IBM is a trademark of the International Business Machines Corporation Fracture Mechanics Precracking Instruction Manual CONTENTS Page 1 INTRODUCTION uta Soenen hE Ge eege ts sinn 2 2 RUNNING THE PROGRAM AN EXAMPLE ees ese ees ee se se ee ee ee ee ee ee ee ee ee ee ee ee ee ees ee ee ee ee ee ee ee ee ee ee ee ee 3 3 THE MAIN SCREEN ne A eege EE 9 Save Settings and Retriev Settings issus ann ii 9 Compliance PD EER Salad ek eg SER ee cath ook lose Ge ne 10 Ra EE EE EE E ER EE OR EE OE EE EN aes 10 Birial af Wee EE ER GE a ee EE GE ER EE RE 10 Fatigue Force ENE ARE EE N EK EA E N OE 10 Stress Intensity Factor Kj EE AE A A ee 10 re Heu EE Ee AE AE LE EE N TA a 10 K Parameter
7. Unless the computer is equipped with the necessary hardware to perform Potential Drop measurements the P D button will be inoperative Ol Preeracking f 7440 Be Fesdbsde Ted Standard Estrena Options able po Ranges Auto Go CENT Strain mm Load EN Manual 10 zl a E Paiameler rend Figure 1 The Main Screen ready to run a test The working ranges of the machine need to be selected next The smallest range should be used which will accomplish the test This will give the best possible resolution and control performance The user should estimate the required ranges based upon the actual specimen in use and the ranges available on the control system To select ranges tab to the box below the Stroke label under the Ranges label and use the up and down arrow keys or click on the box and use the mouse to select a range The range in use will be highlighted and initially represents the range selected on the control system which may not be the range required Select the stroke range then tab to the strain and load ranges setting each in turn Page 4 MA9_1 Fracture Mechanics Precracking Instruction Manual The Program Settings should be entered next The Final a W value should be entered first and is typically set to 0 50 but any value in the relevant range 0 45 to 0 55 for BS 7448 is acceptable The next parameter to enter is the Fatigue Force Ratio which is the ratio of minimum divided
8. a sek extension Clicking on one of MA9_1 Page 9 q Wa Phoenix Calibration amp Services Ltd the files shown will place that file name in the File name box Alternatively a new file name plus extension may be typed in Compliance P D The determination of specimen compliance is vital to the program to enable it to maintain the correct Stress Intensity Factor K at the tip of the crack which is being grown The Compliance option uses software calculation to derive specimen compliance from the measured values of displacement and load The alternative is the P D or Potential Drop method which effectively measures the electrical resistance of the specimen during the test The selection buttons are alternatives selecting one by clicking on its button will de select the other Note Unless the computer is equipped with the necessary hardware to perform Potential Drop measurements the P D button will be inoperative Ranges The smallest strain and load working ranges should be used which will accomplish the test This will give the best possible resolution and control performance The stroke range is less important as actuator stroke is not monitored during the test The user should estimate the required ranges based upon the actual specimen in use and the ranges available on the control system It is essential that the peak to peak load cycle exceeds 20 of the chosen range or the compliance calculation may n
9. am performs actual tests in conjunction with the testing machine it will not run unless it is able to communicate with the control system For the link to operate ensure that the Local Remote switch on the back of the control system display unit if fitted is switched to Remote Once a test is running it is essential that this switch is left unchanged Switching back to local control and changing control system parameters manually rather than via the computer may mean that the computer software uses incorrect values with consequent risk of wrong results or damaged specimens Once the program is running the computer will spend a few seconds communicating with the control system to check system parameters When it has finished the Main Screen of the Precracking Program appears as shown in figure 1 but without the parameters entered Windows programs are almost always used with a pointing device such as a mouse but they may also be controlled using the keyboard and this can sometimes be a faster way to enter parameters To select parameter entry boxes without a mouse the tab key can be used to select each in a repeating sequence The Main Screen entries will now be described in the order in which they may be accessed by tabbing This is not only easier to follow if a mouse is not available but it helps to avoid missing an essential parameter Reference will however be made only to mouse operation e g clicking Users without a mou
10. by maximum force which is applied during the test cycle A typical value for this is 0 1 The program will vary the mean and cyclic amplitude in order to maintain this value during the test The Stress Intensity Factor K should now be entered This value is maintained by the software modified if required by the K Parameter option along with the Fatigue Force Ratio as the test progresses and the crack grows The Frequency at which the specimen is to be fatigued should be entered next The test is performed using a sinusoidal waveform at this frequency The K Parameter box provides for maintaining a fixed K value or automatically increasing or decreasing the K value as the crack grows 1f allowed by the chosen test standard Fixed Increasing or Reducing can be selected with the cursor up down keys or by clicking with the mouse If Increasing or Reducing is selected then Final K Value should be entered followed by Crack Increment which is the change in crack length to be exceeded each time before the K value is automatically adjusted Unlike the other parameters shown on the screen the Part No box need not be completed in order to run a test The box is provided only for convenience and any batch job or part number entered here will be printed at the end of the test The File Name box in the Results section should be completed with a name to be used for the test
11. de range of load frames and extensometry All Phoenix Calibration Services applications programs are designed to run within the Windows environment on an IBM compatible personal computer Page 2 MAQ9 I Fracture Mechanics Precracking Instruction Manual 2 RUNNING THE PROGRAM AN EXAMPLE The Precracking Program has many possible options which are explained in detail in the sections which follow In order to familiarise the user with the basic principles of the software this example section describes a typical test which might be performed While it may not correspond exactly to your own testing methods please read this section carefully The small amount of time required will give the new user a good overview of the features available and how to run the software Because the program cannot be used without a specimen which will be damaged by the test the use of scrap specimens during familiarisation is recommended Without a specimen the main screen parameters may still be entered up to the point at which the test is started Once Windows is running start the program by selecting it from the Start button gt All programs gt Phoenix Services gt FMA Precracking or double click the FMA Precracking icon on the desktop If the Virtual Control Panel VCP is already running the Precracking Program will use it to check the control system parameters If VCP is not running it will be started automatically Since the Precracking Progr
12. e Settings can be used Clicking the Save Settings or Retrieve Settings button opens a standard dialogue box figure 4 which contains four main subsections The Drives and the Save file as type boxes both have a down arrow button at their right hand end Clicking on this button will produce a drop down list of the available options and any of those options may be selected by clicking on them The disk drive which is selected may be seen both within the Drives box and also as part of the full path specified just below the Folders title For users who are not familiar with files folders or directories and the way in which they are organised into trees please refer to your Windows instruction manual The Folders box shows part of the tree structure on the drive which has been selected Only the route to the folder which is open is shown plus its sub folders The folder selection is changed by double clicking on the required folder name If the C root folder is selected all sub folders in the root folder will be displayed In this way the required folder may be quickly accessed and the files within that folder will be listed in the box below File name The box below the File name box displays the files within the selected folder which have the extension shown in the Save file as type or List files as type box It is normal practice for Precracking Program settings files to be saved with
13. ecimen is not correctly gripped if the preload is not achieved within quite fine limits a warning message is displayed In addition to incorrect gripping possible causes of the preload not being achieved are that the control system gain is too low or that the servo valve bias is incorrectly set If the message does appear and there is no obvious problem with the specimen which might cause it ensure that the control system parameters are correctly set Refer to the control system instruction manual for information about setting correct gains and bias While the test is running it may be paused at any time by clicking the HALT button The test may then be continued or aborted which will cause the specimen to be unloaded and then the program will return to the Main Screen The message NOT UPDATING appearing at any time on the display refers to calculation of specimen compliance This error message indicates that the load or displacement signals are not large enough The most likely cause of the problem is that an unsuitable selection of load range has been made The peak to peak variation in load during the test cycle must be at least 20 of the load range in use For example if the load is cycling between 1 and 11 kN the load range must not be greater than 50 kN In this case a 20 kN range would be recommended While running the test the values on the display will update regularly as the crack is grown Once the crack reaches the requ
14. es the ENTER key to be pressed to open the selected menu Once open use the up or down cursor keys to make a selection followed by ENTER or just press an underlined short cut key To cancel the selection process press the escape key Page 16 MAQ9 I Fracture Mechanics Precracking Instruction Manual 6 APPENDIX 2 AN EXAMPLE RESULTS FILE The following is an example of a dat results file generated by the Precracking Program Precracking 5919 v3 3 EXAMPLE1 DAT 19 01 98 5 19 25 For Phoenix Services use Number 1 Test Ref Description 1 Quantity Order No Material Spec Heat Treatment Code Mark Remark 1 Remark 2 Remark 3 Remark 4 Test Standard BS 7448 Specimen Type CTS Design Type Compact Effective Width W mm 26 Thickness B mm 12 Span not applicable mm Notch Length mm 9 Requested Final a W 5 Requested R Ratio 1 Requested Initial K Factor 40 Fixed SS Final K Factor 6699 6699 Crack Increment MAQ9 I Page 17 Zi Na Phoenix Calibration Services Ltd 6699 Precracking Frequency Hz 10 Sub sized or Side Grooved No false Crack Plane x y Stepped Notch No false Total Width C mm 32 5 Outward point
15. indows environment on an IBM compatible personal computer This instruction manual does not assume a working knowledge of Windows however the user is urged to read the Windows documentation for complete information as only the basic details are given here For users new to the Windows environment the following is a glossary of important terms used Mouse pointer a pointing device on the screen which is moved using the mouse Most operations within Windows are achieved by pointing to parts of the screen and pressing the buttons on the mouse The shape of the mouse pointer will change as it points to different objects The normal pointer is an arrow which points upwards and slightly left When the pointer is placed in a text entry box it changes to an I beam similar to a capital I When the computer is performing some action which requires it to suspend mouse operation temporarily when reading or writing a file to disk for example the pointer changes to an hour glass Click the action of pressing the mouse buttons is usually known as clicking not pressing as it is a momentary press click which is usually used The expressions left click or right click refer to clicking the left or right buttons on the mouse Most operations use the left mouse button so click usually means left click Double click is to click the mouse button twice in quick succession This is a specific action quite distinct from clicking the
16. ing Attached Knife Edges Yes true Razor Blades No false Knife Edge Thickness mm 2 Poisson s Ratio 5 Precracking Temperature 20 Young s Modulus 210000 0 2 Proof Strength Precracking Temperature 480 Tensile Strength Precracking Temperature 500 RESULTS Final a W 502 Final Crack Length 13 049 Final Compliance mm kN 02273 Final K Factor 40 Final Peak Load KN 12 29 Final R Ratio 097 Final Cycle Count 16252 Page 18 MA9 I Notes MA9 I Fracture Mechanics Precracking Instruction Manual Page 19 m Wa Phoenix Calibration amp Services Ltd Phoenix Calibration amp Services Ltd Brick Kiln Street Harts Hill Brierley Hill West Midlands DY5 1JG UNITED KINGDOM Tel No 44 0 1384 480545 Fax No 44 0 1384 480602 E mail sales amp phoenixcalibration co uk Web site http www phoenixcalibration co uk Page 20 MAQ9 I
17. ired size specified by the Final a W figure the program displays a message that the test has finished and requesting that the specimen be removed Clicking OK displays another warning message box which allows the actuator to be returned to the starting position The results of the test may be printed either at the normal end of the test or if the test has been halted by the user The dat results file created during the test may be imported into the subsequent Fracture and Analysis Programs Page 8 MAQ9 I Fracture Mechanics Precracking Instruction Manual 3 THE MAIN SCREEN This section describes the features of the Main Screen in detail see figure 1 with the exception of the Menu Bar which is dealt with in section 4 Save Settings and Retrieve Settings When standard tests are to be performed regularly it is possible to save the settings which are used These settings may then be recalled using the Retrieve Settings button on the Main Screen avoiding the need to re enter all the parameters on each occasion that the test is run Save Settings File name Folders c Nesh settings example sek 3 settings Save file as type Drives Settings Files SEK v c cdrivepart D Figure 4 The Save Settings dialogue box The Retrieve Settings box is similar It is necessary for all parameters except the Part No and details on the More Data screen to be correctly entered before Sav
18. mouse button twice with an interval between If the user has difficulty in clicking fast enough the double click response speed may be changed from within the Windows Control Panel Please refer to your Windows manual Edit cursor also known as the Insertion Bar Entering text or numerical values is often achieved by placing the mouse pointer over the box where the parameter appears then selecting the value for editing by left clicking This places an edit cursor at the point where the editing will take place The edit cursor is in the form of a vertical flashing bar The backspace and delete keys may be used while editing Tabbing instead of pointing and clicking on parameter entry boxes or buttons using the mouse it is possible to use the tab key to make a selection Tabbing selects the parameters in a repeating sequence and using Shift Tab reverses the sequence The item which is selected is identified either by the presence of the edit cursor or by a dotted box If the selected item is a button it may then be operated by pressing the space bar on the keyboard Regardless of the selection there is usually a button which has a bold outline This is known as the Default Button and may be operated by using the ENTER key even when it is not currently selected Greyed out when the operation of a button is inhibited for some reason its colour and outline are made grey Clicking on a greyed out button will not cause it to operate Access keys
19. nd Analysis Programs and may alternatively be entered when these programs are run The values are not required in order to run the Precracking Program and are provided MA9_1 Page 5 m Wa Phoenix Calibration amp Services Ltd here only for convenience but it is recommended that they are entered at this stage if possible Full details of this dialogue box and its contents are given in Section 3 The Main Screen now has all the information required in order to run a test and to avoid having to enter the values again they should be saved Click the Save Settings button enter a file name in the File name box then click OK These settings may now be recalled at a later date Precracking Program settings are saved with a sek extension To run the test click the Run Test button If the results file which has been specified for the test already exists the program will prompt the user to overwrite the old file Answering No will allow the user to return to the Main Screen where the file name may be changed For this example answer Yes to the file overwrite prompt if it appears The next message will prompt the user to turn the pressure on At this stage the pump is not running on the machine so answering OK to this message will start it This prompt is provided as a safety measure to permit anybody close to the machine to be warned that the test is about to start If the machine has been left ru
20. nections are correctly made or that the actuator has been positioned as required during test setup To remove the Feedbacks display window simply click the OK button or press SPACE or ENTER Note that the control system displays feedbacks and maximum measured values at different rates to the computer display therefore there will sometimes be differences between the two displays especially if the values are changing The difference between the displayed values for steady state conditions should not exceed the tolerances permitted during calibration of the equipment If the difference is outside tolerance levels the board within the computer may be adjusted The control system data acquisition system may not be adjusted It is important to realise that any monitoring or test equipment connected to the control system Transducer Monitor BNC connectors should have input impedances in excess of 50k ohms as low impedance devices may corrupt the readings obtained by the computer Test Standard menu The Test Standard menu allows the user to select which standard the test is to be performed with Choices include BS 7448 ASTM E 399 ASTM E 647 and ASTM E 813 This governs what range of values for certain parameters are acceptable and what type of specimen may be used References menu The References table contains important test details such as material specification etc which may be entered by the user and printed with the re
21. nning with pressure already on this message will not appear The References Table now appears and may be completed with information about the test and the specimen None of the references are necessary in order to run the test they are provided only for record purposes For this example just click OK The Run Screen now appears briefly ready to display the measured parameters as the test progresses If the integrator is not already on Digital controller then a message box will appear asking if it should be turned on Click the Yes button to turn it on If the adaptive control is not already on Digital controller then a message box will appear asking if it should be turned on This is needed to maintain the correct maximum and minimum load values during the test Click the Yes button to turn it on The Specimen Setup pop up window will then be shown which allows the actuator to be positioned in order to fit the specimen figure 2 Clicking the button marked or pressing the F9 key will move the grips apart while clicking the button marked gt lt or pressing the F10 key will move the grips closer together In either case the actuator will continue to move at the rate specified in the Rate box until the Stop button is operated or the F11 key is pressed Note that if the actuator is still opening or closing clicking OK only stops the actuator A second click is necessary to continue running the test
22. ot update a warning message will appear 1f this happens To select ranges tab to the box below the mode required under the Ranges label and use the up and down arrow keys or click on the box and use the mouse to select a range The range currently selected on the control system will initially be highlighted Final a W The Final a W figure is the ratio of crack length to specimen width to which the crack will be grown For example this should be between 0 45 and 0 55 for a valid test to BS 7448 Fatigue Force Ratio R The Fatigue Force Ratio is the ratio of minimum divided by maximum force which is applied during the test cycle The absolute values of load applied during the test are determined by the program to achieve the required stress intensity factor Only the ratio of forces is specified by the user A typical value of Fatigue Force Ratio is 0 1 Stress Intensity Factor K When using the Fixed K option the Stress Intensity Factor K is the value maintained by the program along with the Fatigue Force Ratio as the test progresses and the crack grows Frequency The crack is grown by cycling the specimen loading using a sinusoidal waveform at the frequency specified Any value in the range 1 5 Hz to 100 Hz is permitted Page 10 MAQ9 I Fracture Mechanics Precracking Instruction Manual K Parameter The K Parameter box contains a Fixed option which means that the test will be
23. pecimen width and breadth Effective Width W Thickness B Notch Length For specific details of how these dimensions are defined please refer to the relevant standard as they vary with specimen type As a general reminder however the Effective Width W of the specimen is measured in the direction in which the crack is to be grown the Thickness or Breadth B is measured in the direction along the crack tip or notch end Span This parameter may only be entered if a three point bend type specimen is selected in which case this dimension is the distance between the supporting rollers of the specimen fitting Young s Modulus E The value of Young s Modulus for the material under test should be entered in this box MA9_1 Page 11 q Na Phoenix Calibration Services Ltd More Data gt Specimen Parameters Clicking the button marked More Data opens a pop up window with further specimen parameters All of these values are optional within the Precracking Program although they are essential to the Analysis Program however the user is recommended to enter them into the Precracking Program if possible Specimen Parameters Specimen Details Knife Edges IT Sub sized or Side Grooved Y Dutward pointing Attached Crack Plane EE 7 Razor Blades Compact Test Specimen Knife Edge E I Stepped Notch Thickness z mm 2 Total Width C 32 mm Poisson s Ratio v 0 301 Precracking Temperature T
24. s used to grow a precrack in the specimen after which the Fracture Program loads the specimen to final fracture or plastic collapse Finally the Analysis Program uses the results obtained from the first two tests to calculate the opening mode plane fracture toughness Kye critical crack tip opening displacement CTOD or critical J fracture toughness values of the specimen The software may be used with either Compact Tension Specimens CTS or three point bend Single Edge Notch SEN specimens Although the three programs are designed to work as an integrated suite each may be used separately with data from other sources which provides for maximum flexibility The Precracking Program displays the test status while running with the cycle count a W and running crack length continuously updated on the screen see figure 3 The test results and specimen parameters may be printed for record purposes The test results data are placed in a standard comma separated variable CSV format ASCII file which may easily be imported into other programs such as spreadsheets word processors or data analysis packages These results are also imported into the Fracture and Analysis parts of the Fracture Mechanics suite of programs to produce one final file with all the specimen test results and analysis incorporated Working in conjunction with a Phoenix Services Control System and servo hydraulic testing machine the Precracking Program is compatible with a wi
25. se should refer to Appendix 1 An Introduction to Windows which explains the use of access keys tabbing space bar and enter keys to select items When the Main Screen first appears the selected button is Retrieve Settings When standard tests are to be performed regularly it is possible to save the settings which are used These settings may then be recalled using the Retrieve Settings button avoiding the need to re enter all the parameters on each occasion that the test is run For the purpose of this example it is assumed that no suitable settings are saved and that the Main Screen parameters will all need to be entered in turn MA9 I Page 3 q Wa Phoenix Calibration Services Ltd The required test standard should be now chosen from the list shown when Test Standard is selected on the menu bar The current standard is shown on the title bar of the main screen This determines acceptable parameters for the specimen and test The first selection which may be made on the screen is the choice of specimen compliance calculation The alternatives are to use software calculation based on measured load displacement or the P D or Potential Drop method which effectively measures the electrical resistance of the specimen during the test The selection buttons are alternatives selecting one by clicking on its button will de select the other The compliance method is the most commonly used so it is selected for this example Vote
26. sults at the end of the test To enter values into the table select the Setup option from the References menu This will open the table for text entry When the values have been entered click the OK button Entering any information into the References table is optional MAQ9 I Page 13 Zi Wa Phoenix Calibration amp Services Ltd To print a copy of the References table to the printer select the Print option from the References pull down menu Options menu gt Preferences gt Loading Rate The Loading Rate normally entered in units of kN s is the rate at which the specimen is loaded to the mean value during the initial part of the test It is also the rate at which the specimen is unloaded Table menu The Table menu displays the f a W table for CTS or the f a W for SEN specimens This table is used by the precracking test but does not require any user input and is provided only for reference The option is provided to print the table The EBd p value is also shown for reference About menu The About menu displays a box containing the Precracking Program version number as well as information to help the user to contact Phoenix Calibration and Services in the event of a query Page 14 MA9 I Fracture Mechanics Precracking Instruction Manual 5 APPENDIX 1 AN INTRODUCTION TO WINDOWS All Phoenix Calibration amp Services applications programs are designed to run within the W
27. vaare edle 11 Part NO ses des OE Ee NE EO EO N OO EE IE EE N eder N N N 11 Pardes ETE in OE EE OE RR EL OER EE N EE GE 11 Specimen RE 11 Effective Width M asken et 11 TEhickness OS 11 Notch Li dd ME EA iia 11 A ds dd 11 Young s Modulos Exc EER RE EE ER OE EE EE OR EE 11 More Data gt Specimen Parameters sise 12 Run TES EE 12 4 THE MAIN SCREEN MENU BAR ese esse ee ee ee se ee es ee ee ee es se ee ee ese ee ee ee ee ee esse ee ee ee ee ee ee se ede ee Re ee ee ee 13 ede GE AE aa ada N ER EE N 13 Feedbacks Men RE OO Oe OE EL ER OE OE a EE N OE EE EE oi 13 Test Standard ER EES EE A A nn GE a GE GE hd 13 Refer nces Menu RE EE OO neh EE aina Sete NE EE EE NE OE OE EE OE 13 Options menu gt Preferences gt Loading Rate ss 14 Table aie dl OER O N N EE EE EE A 14 ADOUtAMION Us RE chet os EE EE AE NE EER ON OR EEN EE 14 5 APPENDIX 1 AN INTRODUCTION TO WINDOWS see ees se ee ee ee ee ee se Re ee ee Re ee Ge ee ee GR Re ee ee RA 15 6 APPENDIX 2 AN EXAMPLE RESULTS FILE see ees se se ee ee se ee ee ee ee ee ee ee gee ee ee ee ee ee ee ee ee ee ee ee ee ee 17 MA9 I Page I Zi Wa Phoenix Calibration amp Services Ltd 1 INTRODUCTION This manual describes the operation of the Phoenix Services Precracking Program which is one part of a three program suite for Fracture Mechanics testing to standards including BS 7448 Part 1 1991 The other two programs in the suite are the Fracture and Analysis programs The Precracking Program i
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