PSI - Issue 52

Hideaki Katogi et al. / Procedia Structural Integrity 52 (2024) 611–617 Hideaki Katogi/ Structural Integrity Procedia 00 (2019) 000 – 000

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2.2. Static tensile test Before and after outdoor exposure tests, static tensile tests of synthetic leathers were conducted based on JIS K 6552. The environmental temperature of static tensile test was 20 °C. The humidity was 65 %RH. The cross-head speed was 100 mm/min. The gauge length of specimen was 30 mm. The test machine is universal material testing Instrument (TENSILON RTC-1310, A&D Co., Ltd). The fracture morphology of synthetic leather was observed after static tensile test. The number of specimen was five. Fig. 3 shows specimen for static tensile test.

Fig. 3. Specimen for static tensile tests.

3. Results and discussion Fig. 4 shows typical stress-strain curves of synthetic leather before and after outdoor exposure tests. And, table 1 shows result tensile properties of synthetic leather before and after outdoor exposure tests. Stress-strain curves of

Fig. 4. Typical stress-strain curves of synthetic leathers before and after outdoor exposure tests.