Analysis of the temperature evolution in cyclic loading using the thermoelastic effect with plastic deformation

被引：0

作者：

Park, Sanglok ^{[1
,2
]}

Shim, Hyong-Sub ^{[1
]}

Lee, Jun-Su ^{[1
]}

Shin, Kyeongho ^{[1
]}

Lee, Young-Jun ^{[1
]}

Kim, Joo-Hyung ^{[1
]}

机构：

[1] Inha Univ, Dept Mech Engn, Incheon 22212, South Korea

[2] Norfolk State Univ, Dept Engn, Norfolk, VA 23504 USA

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2024年 / 38卷 / 01期

关键词：

Cyclic loading; Temperature evolution; Thermoelastic effect; Thermography; Plastic deformation; Poly-lactic acid; Hysteresis curve; Internal friction; RAPID-DETERMINATION; FATIGUE BEHAVIOR; LIFE PREDICTION; RISE;

D O I：

10.1007/s12206-023-1219-6

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The conventional approach to temperature evolution in cyclic loading is explained by a hysteresis curve with three phases. However, it has not been matched with experimental data except in the beginning of the cyclic loading. Thus, this study suggests a new approach to temperature evolution with three phases in cyclic loading by plastic deformation using the thermoelastic effect. The sample was fabricated following ASTM D638 standard for cyclic loading, and the temperature was measured during the cyclic loading by an infrared camera. Thermography was used to observe partial heating caused by cracks. The results were evaluated with the correlation (R2) coefficient between temperature and the derived equation as 0.96 in phases 1 and 2. Also, the partial heating was observed showing the effect of cracks for the temperature evolution in phases 2 and 3. Based on these results, a new approach to temperature evolution in cyclic loading is suggested.

引用

页码：221 / 228

页数：8

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