The goal of our VSR On-Line Library is to house industry’s most comprehensive, definitive and pioneering works in the field of vibratory stress relief. Although we’ve made good progress towards this goal, it is inevitable that not all papers on the subject have been found by or brought to the attention of the librarians. We are committed, however, to amend any oversight of current work, and to regularly update the site with new work through our continuing research, and the assistance of other interested parties.
Finite Element Modeling Of Vibration Stress Relief After Welding
A comprehensive work that combines elements of FEA (Finite Element Analysis), and laboratory testing to gauge the effectiveness of vibratory stress relief. The study compares resonant frequency vibratory treatment to the non-resonant approach. (Published: ASM.)
Continue Reading >Vibratory Stress Relief – An Investigation Of The Underlying Processes
This work, which complements that done by Dawson & Moffat, explains why vibratory stress relief is highly unlikely to cause fatigue (an issue raised in D&M Report), proving that stress relieving takes place at lower dynamic loading levels than previously estimated. (Authors Submission to VSR On-Line Library)
Continue Reading >Effect of Vibratory Stress Relief During Welding of Thick Stainless Steel Plate
This research used conventional VDW (Vibration During Welding), ie sub-sonic to low-sonic frequency vibration, to study the effects of VDW on welding distortion of stainless steel plates. (View at www.osti.gov/energycitations/purl.cover.jsp?purl=/10122577-U7pmmd/native/.)
Continue Reading >Vibratory Stress Relief of Mild Steel Weldments
A comprehensive work which includes a comparison of resonant frequency vibratory treatment to the non-resonant approach, and a discussion of vibratory stress relief applications within industry. (PhD dissertation, Oregon Graduate Center.)
Continue Reading >Topics in Vibratory Stress Relief of Weldments
This work applies ANYSYS Finite Element Analysis to a study of the effectiveness of vibratory stress relief. In numerous applications within industry the success of vibratory treatment is shown to be related to the amplitude vibration. (M S dissertation, Rensselaer Polytechnic Institute.)
Continue Reading >Modification Of Welding Stresses By Flexural Vibration During Welding
This is a study of the effectiveness of VDW (Vibration During Welding) inaccurately referred to as VSR (Vibratory Stress Relief) on residual stresses. Although some reduction in longitudinal residual stresses were achieved, transverse residual stresses either increased or decreased, based on the amplitude of vibration. The greatest increases in stress caused by vibration were near the toe of the welds. Welding distortion, the most common use of VDW, was not discussed or tested. ( Published: Science and Technology of Welding & Joining.)
Continue Reading >The Influence Of Vibratory Treatment On The Fatigue Life Of Welds: A Comparison With Thermal Stress Relief
This paper compares the effects of PWHT (Post Weld Heat Treatment) to those of vibratory treatment (and a control group which received no treatment) in improving the fatigue life of welded components. Vibratory treatment was shown to be superior to PWHT in extending fatigue life. ( Authors Submission to VSR On-Line Library.)
Continue Reading >Experiments in Stress-Relieving Castings and Welded Structures by Vibration
This 1943 article is the earliest known scientific publication on vibratory stress relief. The applications described include use of resonant frequency vibration on large fixtures for dry-dock use, castings, and rail-bed rails. Vibration equipment described was all custom-made in USN workshops in support of the WWII war effort. (Published: Journal of the American Society of Naval Engineers)
Continue Reading >Evaluating the Effectiveness of Vibratory Stress Relief by a Modified Hole-Drilling Method
This study demonstrates a refined technique of using strain gauges to evaluate the effectiveness of vibratory stress relief. Resonant frequency vibration was successfully used to lower stresses in all tested samples. (Published: International Journal of Advanced Manufacturing Technology.)
Continue Reading >Reduction of Residual Stress by Ultrasonic Surface Vibration
An independent study of the benefits of Vibration During Welding (VDW). This research work showed that VDW is best accomplished using an ultrasonic vibration frequency. (View online at http://www.iot.ac.jp/english/index.html)
Continue Reading >Vibratory Residual Stress Relief and Modifications in Materials to Conserve Resources and Prevent Pollution
The application of FEA (Finite Element Analysis) to a model of vibratory stress relief. Using proven materials science algorithms, this work provides a scientific comparison of resonant frequency vibratory treatment to the non-resonant approach. (Published: CEER / Alfred University)
Continue Reading >Vibratory Stress Relief: A Fundamental Study Of Its Effectiveness
The preeminent laboratory-based study on the effectiveness of vibratory stress relief. Authors successfully relieved an average of 90% of stresses in 20 samples of 3 different alloys. (Published: Journal of Engineering Materials and Technology; ASME.)
Continue Reading >Stress Relief Of Welds By Heat Treatment And Vibration: A Comparison Between The Two Methods.
This paper describes the results of a resonant frequency vibratory treatment vs PWHT stress relief test in pressure vessel and process piping applications. The paper concludes that based on positive test results, further investigation of VSR is warranted. (Authors Submission to VSR On-Line Library.)
Continue Reading >Vibratory Stress Relief: Methods Used To Monitor And Document Effective Treatment, A Survey Of Users And Directions For Further Research
A 2005 update of Adams & Klauba work, includes two brief case studies, a comprehensive discussion of the limits of PWHT, and an updated survey of users. (Published: ASM.)
Continue Reading >Productive Applications of Mechanical Vibrations
The first paper published by an engineering society that includes a vibratory stress relief treatment chart. Also includes survey of users of vibratory stress relief. (Published: ASME.)
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