Fatigue limit diagram according to Haigh and Smith
Fatigue limit diagrams according to Haigh or Smith show the maximum yieldable stress amplitude as a function of the mean stress.
This...
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...
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...
Fatigue test
The fatigue test provides information about the strength of a material under continuously changing stress (dynamic load).
This article provides answers to...
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...
Dye penetrant inspection (DPI)
This article provides answers to the following questions, among others:
How is dye penetrant inspection carried out and where is it used?What is the purpose of...
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...
Cupping test
This article provides answers to the following questions, among others:
What is the cupping test (according to Erichsen)?What is cold formability?
Magnetic particle inspection (MPI)
This article provides answers to the following questions, among others:
What is the principle behind magnetic particle inspection?How should flaws be aligned with respect to the...
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...
Eddy current testing (ECT)
This article provides answers to the following questions, among others:
How does eddy current testing work?Why are two induction coils often connected against to each other?
