Device for Torsional Fatigue Strength Assessment Adapted for Pulsating Testing Machines
The torsional fatigue test determines the fatigue limit for a certain asymmetry coefficient of the cycle. The assessment of fatigue tests is performed on specialized machines. There are two types of torsion testing machines: universal machines that have the torsion component and specialized machines...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/7/2667 |
| _version_ | 1797437702223691776 |
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| author | Viorel Goanta |
| author_facet | Viorel Goanta |
| author_sort | Viorel Goanta |
| collection | DOAJ |
| description | The torsional fatigue test determines the fatigue limit for a certain asymmetry coefficient of the cycle. The assessment of fatigue tests is performed on specialized machines. There are two types of torsion testing machines: universal machines that have the torsion component and specialized machines only for torsion testing. Nevertheless, no matter which proposed option we choose, the purchase prices for these testing machines or the values spent for self-management are quite high. This paper presented a device used for torsion fatigue testing, adaptable to a universal pulsating testing machine, designed to determine the torsion fatigue limit for different materials. The built device is simple and reliable, and therefore inexpensive. By using this device, we can determine the limit of the torsional fatigue after any stress cycle and we can use the parameters obtained from the universal machine to which it was attached. The torque and twisting angle of the test specimen during the test can be determined by calculation. The paper also presented an experimental method for determining shear strains based on calibration experiment, using a specimen on which strain gauges were mounted. The values taken from this calibration experiment were compared with those obtained from the theoretical calculation. |
| first_indexed | 2024-03-09T11:25:10Z |
| format | Article |
| id | doaj.art-40264c4a3ad04b99a8a69f047bb3770a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T11:25:10Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-40264c4a3ad04b99a8a69f047bb3770a2023-12-01T00:03:07ZengMDPI AGSensors1424-82202022-03-01227266710.3390/s22072667Device for Torsional Fatigue Strength Assessment Adapted for Pulsating Testing MachinesViorel Goanta0Mechanical Engineering, Mechatronics and Robotics Department, Mechanical Engineering Faculty, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, RomaniaThe torsional fatigue test determines the fatigue limit for a certain asymmetry coefficient of the cycle. The assessment of fatigue tests is performed on specialized machines. There are two types of torsion testing machines: universal machines that have the torsion component and specialized machines only for torsion testing. Nevertheless, no matter which proposed option we choose, the purchase prices for these testing machines or the values spent for self-management are quite high. This paper presented a device used for torsion fatigue testing, adaptable to a universal pulsating testing machine, designed to determine the torsion fatigue limit for different materials. The built device is simple and reliable, and therefore inexpensive. By using this device, we can determine the limit of the torsional fatigue after any stress cycle and we can use the parameters obtained from the universal machine to which it was attached. The torque and twisting angle of the test specimen during the test can be determined by calculation. The paper also presented an experimental method for determining shear strains based on calibration experiment, using a specimen on which strain gauges were mounted. The values taken from this calibration experiment were compared with those obtained from the theoretical calculation.https://www.mdpi.com/1424-8220/22/7/2667fatigue teststressstrainfatigue limitdevice fatiguecalibration |
| spellingShingle | Viorel Goanta Device for Torsional Fatigue Strength Assessment Adapted for Pulsating Testing Machines Sensors fatigue test stress strain fatigue limit device fatigue calibration |
| title | Device for Torsional Fatigue Strength Assessment Adapted for Pulsating Testing Machines |
| title_full | Device for Torsional Fatigue Strength Assessment Adapted for Pulsating Testing Machines |
| title_fullStr | Device for Torsional Fatigue Strength Assessment Adapted for Pulsating Testing Machines |
| title_full_unstemmed | Device for Torsional Fatigue Strength Assessment Adapted for Pulsating Testing Machines |
| title_short | Device for Torsional Fatigue Strength Assessment Adapted for Pulsating Testing Machines |
| title_sort | device for torsional fatigue strength assessment adapted for pulsating testing machines |
| topic | fatigue test stress strain fatigue limit device fatigue calibration |
| url | https://www.mdpi.com/1424-8220/22/7/2667 |
| work_keys_str_mv | AT viorelgoanta devicefortorsionalfatiguestrengthassessmentadaptedforpulsatingtestingmachines |