Category: General Interest

Hill Engineering is presenting an update on the Engineered Residual Stress Implementation (ERSI) Working Group at the upcoming 2017 North American Residual Stress Summit in Dayton, OH. The Residual Stress Summit brings together residual stress users and developers. Hill Engineering’s presentation will include an overview of ongoing work within the Engineered Residual Stress Implementation Working Group related to cold expanded holes, fatigue and fracture analysis, and similar topics. The abstract text is presented below. Continue reading The Engineered Residual Stress Implementation (ERSI) Working Group

Hill Engineering is presenting about residual stress production quality control at the upcoming 2017 North American Residual Stress Summit in Dayton, OH. The Residual Stress Summit brings together residual stress users and developers. Hill Engineering’s presentation will include an overview of ongoing work related to quality control processes for residual stress in manufacturing. The abstract text is presented below. Continue reading Residual stress production quality control

Hill Engineering is proud to support the USAF and their objective to advance damage tolerance analysis methods through the Engineered Residual Stress Implementation (ERSI) workshop. At the most recent ERSI meeting, Hill Engineering met with other stakeholders in the USAF aircraft community to review progress over the past year towards implementation of engineered residual stress in the USAF fleet. Continue reading Engineered Residual Stress Implementation workshop

Hill Engineering is presenting about material data and fitting processes for fatigue property assessment at the AFGROW Users Workshop 2017 in Layton, UT. The purpose of the workshop is to provide a forum for users to share ideas, demonstrate how AFGROW is being used for practical cases, and discuss future development. Hill Engineering’s presentation will include a summary of a structured material fitting process and how the fit to the fatigue crack growth property data can affect fatigue analysis results. If you are in Layton for the meeting, please feel free to make an appointment to stop by Hill Engineering’s new office. The abstract text is presented below. Continue reading Fatigue crack growth rate data fitting

Hill Engineering is presenting about fatigue analysis at the upcoming AFGROW Users Workshop 2017 in Layton, UT (home of Hill Engineering’s new office). The purpose of the workshop is to provide a forum for users to share ideas, demonstrate how AFGROW is being used for practical cases, and discuss future development. Hill Engineering’s presentation will include a summary of the BAMF software and how it is used to support fatigue crack growth analysis. The abstract text is presented below. Continue reading AFGROW Users Workshop – The Future of BAMF

Hill Engineering is presenting an overview of our ERS-toolbox® software at the upcoming AFGROW Users Workshop 2017 in Layton, UT. The purpose of the workshop is to provide a forum for users to share ideas, demonstrate how AFGROW is being used for practical cases, and discuss future development. Hill Engineering’s presentation will include an overview of past work where ERS-toolbox® was used to support development of laser peening surface treatments to enhance performance of materials using compressive residual stress. The abstract text is presented below. Continue reading ERS-toolbox® at AFGROW Users Workshop

Hill Engineering is delivering a keynote presentation about the measurement of residual stresses near the surface of peened metals at the upcoming 13th International Conference on Shot Peening (ICSP-13) in Montreal, Canada. The purpose of this conference is to foster exchanges between academic and industrial scientists on processes inducing beneficial residual stress, as well as their effects, with an emphasis on traditional shot peening. Processes like deep rolling, laser peening, ultrasonic peening, cavitation peening, flapper peening and needle peening also fit within the conference’s scope. Hill Engineering’s presentation will include a summary of recent work demonstrating the use of measurements to quantify the near surface residual stress state and to understand its impact on material performance. The abstract text is presented below. Continue reading International Conference on Shot Peening

In the early days of aviation, the concept of fatigue life was not a prime consideration in design. Aircraft did not typically have a long service life and were designed based on ultimate strength. Early aircraft failures occurred due to component/system failures, combat damage, and pilot error. Aircraft did not typically last long enough for fatigue to become an issue. As the design of aircraft became more sophisticated and pilot skill increased, aircraft began to last longer and fatigue became a critical concern. Continue reading Evolution of USAF Damage Tolerance design philosophy