“…The performances of different backings are checked by a set of calibration tests in the laboratory condition. Rakhshtadt et al (1960), Rémond and Védrines (2004), Kamthai and Magaraphan (2015) presented Young's moduli of beryllium bronze foil, POM, and PLA, respectively, as shown in Table 2. In this study, the PLA backings were manufactured by 3D printing, while the other two types of backings were manufactured by computer numerical control (CNC).…”