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Principal Residual Stress Determination

From Lambda Technologies
 

 

As a tensor property, the macroscopic residual stress will generally vary with direction at any point on a body. In most residual stress investigations, the direction of interest is indicated by the stresses applied in service, or by the orientation of fatigue cracks. The residual stress distributions produced by some processes such as shot peening, induction hardening or carburizing may be quite uniform, so that the magnitude of the residual stresses produced is nearly independent of the direction of measurement.

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Product Announcements
Lambda Technologies - Residual Stress Analysis
Residual stresses are vital to the overall strength and life of critical components. Most processes involved in the manufacture of a component can cause residual stresses that will be either... (read more)
Metal Improvement Company - High-Tech Shot Peening Combats Metal Fatigue
Shot peening is a cold working process in which the surface of a metal part is bombarded with small spherical media called shot. Each piece of shot striking the metal acts as a tiny peening hammer... (read more)
Lambda Technologies - Finite Element Analysis (FEA)
Lambda Technologies provides finite element analysis (FEA) services in support of residual stress design and characterization. (read more)
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Integrity Testing Laboratory Inc. - Residual Stress Management Services
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Metal Improvement Company - Unique Laser Peening Services
The Metal Improvement Company laser peening process uses a unique Nd:glass, high output, high repetition laser combined with precision robotic manipulation. During the laser peening process, the laser... (read more)
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Metal Improvement Company - Shot Peen Forming Services by Metal Improvement
Peen forming is the preferred method of forming aerodynamic contours into aircraft wingskins. It is a dieless forming process that is performed at room temperature. The process is ideal for forming... (read more)
Topics of Interest
Two rectangular samples of ASTM SA 508 Class 2 steel, stress relieved and shot peened to 14-16A intensity, were examined in detail to determine the principal macroscopic residual stress distribution. (Read More)
A brief overview of the theory and practice of x-ray diffraction residual stress measurement as applied to shot peened materials is presented. The unique ability of x-ray diffraction methods to... (Read More)
The measurement of residual stress distributions with depth is critical to understanding the impact of machining, shot peening, induction hardening, and similar processes on fatigue performance. The... (Read More)
The magnitude and depth of the layer of compressive residual stress produced by shot peening is critical to achieving increased component fatigue strength. Although the Almen strip provides a... (Read More)
Shot peening is commonly used to produce a layer of compressive residual stress at the surface of components subject to fatigue or stress corrosion failure. Monitoring the Almen intensity controls the... (Read More)
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