Numerical and experimental investigation of shrinkage behavior of...

Polymer Engineering and Science;  August 1, 2008 ;     700+ words ...INTRODUCTION Birefringence, residual stress distribution, and shrinkage affect...satisfaction. Furthermore, the birefringence, residual stress distribution, and shrinkage/warpage...flow induced one. In contrast, the residual stress is mainly attributed by what is established...

Residual Stress Evolution and Mechanical State of Hard Machined Components...

Tribology Transactions;  October 1, 2007 ;     700+ words ......grinding induce very different residual stress profiles in the subsurface. The distinct patterns of residual stress profiles have significant influence...During sliding contact, the residual stress profiles and magnitudes are altered...

Stress: diagnose it before it ruins your parts.(STRESS ANALYSIS)

Plastics Technology;  December 1, 2005 ;     700+ words ...Residual stress is an inherent result of plastics...films and bottles. But in most cases, residual stress is an invisible and insidious problem...temperatures. Some common causes of harmful residual stress in molded, thermoformed, and extruded...

2005 RESIDUAL STRESS SUMMIT

Experimental Techniques;  May 1, 2005 ;     140 words ...The second Residual Stress Summit will be held August 10 - 11 on...practitioners" and "experts" from the residual stress community, and to create a more cohesive group of residual stress practitioners in North America. There...

Reduction of residual stress leads to improvement in piezoelectrics.

Advanced Ceramics Report;  November 1, 2000 ;     468 words ......bending stress to offset the effects of residual stress in a thin film made of piezoelectric...devices, we can also put the effects of residual stress to work in a unique patterning process...films become thinner and thinner, the residual stress increasingly affects the ...

An analysis of residual stress fields caused by shot peening

Metallurgical and Materials Transactions;  June 1, 2002 ;     700+ words ...In this article, the compressive residual stress field (CRSF) introduced by shot peening...show that the maximum of compressive residual stress field for a given material is almost...peening techniques and the surface residual stress values are dependent on both the mechanical...

California Inventors Develop Residual Stress Measurement System

US Fed News Service, Including US State News;  September 12, 2008 ;     333 words ......have developed a method for measuring residual stress. According to the U.S. Patent &...devices and methods for determining residual stress in microelectromechanical system...In one example, a device measuring residual stress of a deposited conduct material includes...

Proto Manufacturing Ltd.: Proto's equipment can determine residual stress...

Advanced Materials & Processes;  October 1, 2002 ;     554 words ......Over the years, it became clear that residual stress was involved in many of the quality...and reliable means of nondestructive residual stress measurement could be developed for...development effort to determine which residual stress measurement technique offered the...

Residual stress improvement of weldment by laser peening

Welding International;  August 1, 2006 ;     700+ words ......Consequently the improved efficacy of the residual stress extends to as much as a depth of 1...paper and the improving effects of residual stress when laser peening is employed for...of the impulse wave, so compressive residual stress is formed by the surrounding elastic...

INDUSTRY NEWS

Experimental Techniques;  January 1, 2004 ;     187 words ...HYTEC HOSTED RESIDUAL STRESS SUMMIT Los Alamos, NM was the...England and Canada attended the "Residual Stress Summit", sponsored by HYTEC...that were caused (or solved) by residual stress. A second day of presentations...

Residual stress measurement using the hole drilling method and laser...

Experimental Techniques;  May 1, 2003 ;     700+ words ......interferometer has been adapted for measuring residual stress. The technique is based on the hole...around the hole to a value of in-plane residual stress. In this 4-part series, we will describe...adapted specifically for measuring residual stress, an analysis technique, quantify ...

A Theoretical study of residual stress effects on fatigue life prediction

Tribology Transactions;  October 1, 2001 ;     700+ words ......the consideration of the changing residual stress during operation of the bearing. This...to investigate the time dependent residual stress on contact fatigue life predictions...study concluded that the changes in residual stress during operation were most likely...

New way to gage residual stresses.(Heat Treating Progress)

Advanced Materials & Processes;  August 1, 1998 ;     700+ words ......simultaneously determining subsurface residual stress and hardness profiles. Accurate knowledge of the subsurface residual stress and hardness distribution produced...of time and temperature.(1) Residual stress distributions may be complex...

Transformation-Induced Residual Stresses.(Brief Article)

Industrial Heating;  August 1, 2001 ;     574 words ...Residual stress is an important consideration in...the development of a compressive Residual stress often is considered a good goal because...used. Two mechanisms that induce residual stress are thermal straining and nonuniform...

Basic modeling and results for injection molding.(Numerical Prediction of...

Polymer Engineering and Science;  November 1, 2002 ;     700+ words ......desirable to be able to control the residual stress that affects the warpage and to minimize...Therefore, accurate predictions of the residual stress and birefringence require a complete...1). Meanwhile, thermally-induced residual stress is a well-known concept representing...