Small Punch Test Method for SHM

Statistical analysis and correlation of small punch test

“…The standard deviation is even bigger in case of Yield Strength, but it is only natural in the way these parameters can differ. No such relationship is observable for Yield Strength although SPT shows much greater sensitivity for parameter change detection in different states of the material were noted and delta of results for UTT is much lower than for SPT [3]. Material 13HMF shows for that after 250000h the material strengthen itself which is correctly represented by both testing methods and with consistent values increments.…”

“…Small Punch Test (SPT) is a collection of ground-breaking techniques for evaluating the health of materials that are currently being researched and validated to support traditional techniques for estimating mechanical properties. Key mechanical characteristics of steel materials, including yield stress, tensile strength, creep properties [1], [2], and ductile to brittle transition temperatures [3], [4], are estimated using SPT [5], [6]. SPT methods have been used for more than 30 years [7], yet they are continually being improved upon to increase their usefulness.…”

“…SPT methods have been used for more than 30 years [7], yet they are continually being improved upon to increase their usefulness. They became well-known because they were the only non-destructive testing technique that could compete with the Uniaxial Tensile Test [3], [8].…”

“…The nondestructive aspect of Scooper sampling technique should be evaluated in regards of original material thickness and mechanical safety boundaries for given machinery and used grade of steel in order not to exceed the minimal wall thickness threshold. No repairment and maintenance is required for samples materials [3]. [11].…”