An Automated Optical Strain Measurement System for Estimating Polymer Degradation under Fatigue Testing; Sensors; Vol. 22, iss. 16
| Parent link: | Sensors.— .— Basel: MDPI AG Vol. 22, iss. 16.— 2022.— Article number 6034, 20 p. |
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| Andre forfattere: | , , , , , |
| Summary: | Title screen Background: this study deals with design of an automated laboratory facility based on a servo-hydraulic testing machine for estimating parameters of mechanical hysteresis loops by means of the digital image correlation (DIC) method. (2) Methods: the paper presents a description of the testing facility, describes the grounds for calculating the elastic modulus, the offset yield strength (OYS) and the parameters of the mechanical hysteresis loops by the DIC method. (3) Results: the developed hardware-software facility was tested by studying the fatigue process in neat polyimide (PI) under various amplitude tension-tension loadings. It was found that the damage accumulation was accompanied by the decrease in the loop areas, while failure occurred when it reduced by at least ~5 kJ/m3. (4) Conclusions: it was shown that lowering the loop area along with changing the secant modulus value makes it possible to estimate the level of the scattered damage accumulation (mainly at the stresses above the OYS level). It was revealed that fractography data, namely the pattern and sizes of the fatigue crack initiation and propagation zones, did not correlate well with the dependences of the parameters of the hysteresis loops Текстовый файл |
| Sprog: | engelsk |
| Udgivet: |
2022
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| Fag: | |
| Online adgang: | https://doi.org/10.3390/s22166034 |
| Format: | Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=685543 |
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| 200 | 1 | |a An Automated Optical Strain Measurement System for Estimating Polymer Degradation under Fatigue Testing |f A. A. Bogdanov, S. V. Panin, P. S. Lyubutin [et al.] | |
| 203 | |a Текст |c электронный |b визуальный | ||
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| 300 | |a Title screen | ||
| 320 | |a References: 54 tit | ||
| 330 | |a Background: this study deals with design of an automated laboratory facility based on a servo-hydraulic testing machine for estimating parameters of mechanical hysteresis loops by means of the digital image correlation (DIC) method. (2) Methods: the paper presents a description of the testing facility, describes the grounds for calculating the elastic modulus, the offset yield strength (OYS) and the parameters of the mechanical hysteresis loops by the DIC method. (3) Results: the developed hardware-software facility was tested by studying the fatigue process in neat polyimide (PI) under various amplitude tension-tension loadings. It was found that the damage accumulation was accompanied by the decrease in the loop areas, while failure occurred when it reduced by at least ~5 kJ/m3. (4) Conclusions: it was shown that lowering the loop area along with changing the secant modulus value makes it possible to estimate the level of the scattered damage accumulation (mainly at the stresses above the OYS level). It was revealed that fractography data, namely the pattern and sizes of the fatigue crack initiation and propagation zones, did not correlate well with the dependences of the parameters of the hysteresis loops | ||
| 336 | |a Текстовый файл | ||
| 461 | 1 | |t Sensors |c Basel |n MDPI AG | |
| 463 | 1 | |t Vol. 22, iss. 16 |v Article number 6034, 20 p. |d 2022 | |
| 610 | 1 | |a digital image correlation method | |
| 610 | 1 | |a hysteresis loop | |
| 610 | 1 | |a polymer fatigue; polyimide | |
| 610 | 1 | |a cyclic load | |
| 610 | 1 | |a mechanical properties | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 701 | 1 | |a Bogdanov |b A. A. |g Aleksey Alekseevich | |
| 701 | 1 | |a Panin |b A. V. |c physicist |c Professor of Tomsk Polytechnic University, doctor of physical and mathematical Sciences |f 1971- |g Alexey Viktorovich |9 17992 | |
| 701 | 1 | |a Lyubutin |b P. S. |g Pavel Stepanovich | |
| 701 | 1 | |a Eremin |b A. V. |c specialist in the field of material science |c Engineer of Tomsk Polytechnic University |f 1990- |g Alexandr Vyacheslavovich |9 16760 | |
| 701 | 1 | |a Buslovich |b D. G. |g Dmitry Gennadjevich | |
| 701 | 1 | |a Byakov |b A. V. |g Anton Viktorovich | |
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