Archive for the ‘Mechanical testing’ Category
Monday, March 20th, 2006
The engineering tension test is widely used to provide basic design information on images/the strength of materials and as an acceptance test for the specification of materials. In the tension test a specimen is subjected to a continually increasing uniaxial tensile force while simultaneous observations are ...
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Monday, March 20th, 2006
The Principles of Ultrasonic Testing
It is a matter of choice whether the ultrasonic testing of safety parts takes place on-line or off-line. Longitudinal and transverse flaws, internal and external flaws, such as shrink-holes, cracks, and inclusions etc., must be nondestructively tested according to the terms of delivery ...
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Monday, March 20th, 2006
Compliance with specified material characteristics is an important part of quality control when manufacturing high-quality industrial products. Even today, however, quality control is still only based on random samples in a large number of cases. The relatively large test effort required and the sometimes inevitable destruction of ...
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Monday, March 20th, 2006
The hardness of a material is a poorly defined term which has many meanings depending upon the experience of the person involved. In general, hardness usually implies a resistance to deformation, and for metals the property is a measure of their resistance to permanent or plastic deformation. ...
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Monday, March 20th, 2006
The fatigue properties of metals are quite structure-sensitive. However, at the present time there are only a limited number of ways in which the fatigue properties can be improved by metallurgical means. By far the greatest improvements in fatigue performance result from design changes, which reduce ...
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Monday, March 20th, 2006
Knowledge Article from www.Key-to-Steel.com
Charpy Impact Test for Metallic Materials
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Abstract:
Charpy impact test method for metallic materials is specified by European EN 10045 standard. This specification defines terms, ...
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Monday, March 20th, 2006
Steel Properties at Low Temperatures
Aircraft and chemical processing equipment are now required to work at subzero temperatures and the behavior of metals at temperatures down to -150°C needs consideration, especially from the point of view of welded design where changes in section and undercutting at welds may ...
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Monday, March 20th, 2006
The engineering tension test is widely used to provide basic design information on images/the strength of materials and as an acceptance test for the specification of materials. In the tension test a specimen is subjected to a continually increasing uniaxial tensile force while simultaneous observations are made of the elongation ...
Posted in Iron, Mechanical testing | No Comments »
Monday, March 20th, 2006
The engineering stress-strain curve does not give a true indication of the deformation characteristics of a metal because it is based entirely on the original dimensions of the specimen, and these dimensions change continuously during the test. Also, ductile metal which is pulled in tension becomes ...
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Monday, March 20th, 2006
The ability of a material to absorb energy when deformed elastically and to return it when unloaded is called resilience. This is usually measured by the modulus of resilience, which is the strain energy per unit volume required to stress the material from, zero stress to ...
Posted in Iron, Mechanical testing | No Comments »