PSI - Issue 24

Claudia Barile et al. / Procedia Structural Integrity 24 (2019) 636–650 C. Barile et al./ Structural Integrity Procedia 00 (2019) 000–000

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levels are further decomposed into their approximation and details. The process is continued for the predefined set of discrimination levels ( l ). The total number of components obtained from the WPT results is 2 l . In the present study, the decomposition level was set to 3, thereby obtaining 8 components.

3. Results

3.1. Tensile Test Results Three specimens were tested for this study: T X , T Y , and T 45 . The tensile test results, yield strength ( ), ultimate tensile strength ( ), Young’s modulus ( E ) and elongation at break ( ε ) are presented in Table 4. The corresponds to the peak load at the time of specimen failure. Table 4. Tensile Test Results of all three Specimens Specimen Name Yield Strength Ultimate Tensile Strength Young’s Modulus E Elongation at Break ε MPa MPa GPa % T X 131.7 207.9 64.9 10.8 T Y 136.9 214.5 65.8 12.6 T 45 124.5 214.2 63.5 10.7

3.2. Acoustic Emission Results

3.2.1. k-means++ clustered Results

Fig 2. DBI Indices for Peak Amplitude data of all three Specimens