Small Punch Test Method for SHM

Kaliciak, Maciej; Uhl, Tadeusz; Nowak, Marek

doi:10.1007/978-3-031-07322-9_63

Cited by 1 publication

(4 citation statements)

References 18 publications

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“…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.…”

Section: Small Punch Tests and Uniaxial Tensile Test Correlation Asse...mentioning

confidence: 90%

“…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.…”

Section: Introductionmentioning

confidence: 99%

“…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].…”

Section: Introductionmentioning

confidence: 99%

“…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].…”

Section: Introductionmentioning

confidence: 99%

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Statistical analysis and correlation of small punch test

Kaliciak

Uhl

Nowak³

2023

Health Monitoring of Structural and Biological Systems XVII

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Structural Health Monitoring methods are in general based on material testing during operation of structures under monitoring. Small Punch Test method is a new approach that allows for material sampling on metal structures without the need to repair the damage due to the size and shape of material volume taken from the structure. The way of material sampling for SPT makes it a non-destructive testing method thus allowing material condition assessment at any stage of machine life without the need to exclude it from usage and cause production downtime. Small Punch Test results provide Yield Stress and Ultimate Strength. In this work we investigate the accuracy of the SPT method in comparison with standard, widely used in industry Uniaxial Tensile Test that is destructive but regarded as a default source of precise mechanical properties data. Materials used for this research are boiler steels in various conditions starting at unused materials and ending on heavily fatigued samples from retired pressure tanks. The goal of this study is to establish a direct correlation between SPT and UTT for investigated materials by the means of statistical analysis of the results. Cluster analysis has been used to investigate the influence of small thickness differences between samples on final results in comparison to the data obtained from standard material testing methods by mixing the data together.

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Section: Small Punch Tests and Uniaxial Tensile Test Correlation Asse...mentioning

confidence: 90%