Principle of ultrasonic testing

Ultrasonic testing (UT)

This article provides answers to the following questions, among others: What is the measurement principle behind ultrasonic testing?What is the coupling agent used for?How are ultrasound waves generated and received?What is the...
Cupping test

Cupping test

This article provides answers to the following questions, among others: What is the cupping test (according to Erichsen)?What is cold formability? Sheets for deep-drawing applications must have very good cold formability, i.e. they...
Schematic setup for stress-relaxation test

Stress-relaxation test

This article provides answers to the following questions, among others: How is the stress-relaxation test performed?For which applications is the stress-relaxation test of great importance?What is relaxation strength? In the creep rupture test,...
Determination of the creep diagram from creep curves

Stress rupture test (creep rupture test)

This article provides answers to the following questions, among others: What is a hot yield strength?What is creep?What factors influence the intensity of creep?At what temperatures is a technically relevant creep to...
Fatigue test setup

Fatigue test

The fatigue test provides information about the strength of a material under continuously changing stress (dynamic load). This article provides answers to the following questions, among others: What are the objectives of the...
Test setup for Charpy impact test

Charpy impact test

This article provides answers to the following questions, among others: What are the objectives of the "Charpy impact test"?Why does "notch impact energy" represent a measure of the toughness of a test...
Test setup for flexural test

Bending flexural test

This article provides answers to the following questions, among others: How does the flexural stress distribution in the cross-section of a specimen subjected to bend loading look like?Where does the maximum bending...
Brinell hardness test procedure

Hardness test

This article provides answers to the following questions, among others: How is the hardness of materials defined?On which principles are all hardness testing methods based?Which indenter is used for Brinell hardness testing?What...
Setup for compression test

Compression test

This article provides answers to the following questions, among others: Why are no longish specimens used in the compression test?Why is the true compressive stress lower than the engineering stress?What is the...
Brittle fracture and ductile fracture

Tensile test

The tensile test is used to determine material parameters such as strength (yield point, ultimate tensile strength) and toughness (elongation at break)! More information about the tensile test can be found...
Types of loads

Destructive material testing & non-destructive testing (NDT)

This article provides answers to the following questions, among others: What type of loads do exist?What is dimensioning?What is the primary purpose of destructive testing?In which cases is non-destructive testing preferable? Materials such...