PSI - Issue 33

Jamaloddin Jamali et al. / Procedia Structural Integrity 33 (2021) 832–842 Author name / Structural Integrity Procedia 00 (2019) 000–000

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Fig. 9: CT specimen made of polyester is subjected to pure mode I loading (displacement rate 5mm/min.).

As for SENB test, the lower supports and the upper indenter should be fixed to the grips of the machine, and the specimen should be centrally placed as this will ensure the loading nose is centered exactly and parallel to the crack. The specimen is subjected to a 3-point bending. The supports of the fixture must be controlled by adjusting the span length to the desired length. After the test configuration is set up as shown in Fig. 10, a transverse load is applied on the specimen and a load vs. displacement curve is obtained from the UTM.

Fig. 10 SENB specimen made of polyester is subjected to pure mode I loading (The indenter displacement rate 5mm/min.).

6. Results 6.1. Tensile Testing The values of force and displacement of polyester specimen under simple tension test are depicted in a form of a graph as shown in Figure 11.

Fig.11: Force vs. displacement curve of polyester specimen under simple tension test. The displacement rate is 5mm/min.