by Adrian DeWald
Residual stress definition – residual stress is defined as the stress that is present in a material in the absence of externally applied loading. Residual stresses often form during manufacturing and are typically an unintentional byproduct of a manufacturing process. As engineers we care about residual stresses because they affect material performance. Continue reading Residual stress definition
by Adrian DeWald
Fatigue tests are an important part of our work at Hill Engineering. There are many reasons to perform fatigue tests including: 1) qualifying the performance of parts for production, 2) ranking and optimizing different production processes, 3) validating fatigue analysis results and associated models, 4) understanding the performance of parts already in service, and more. The following discussion covers some basic details of typical fatigue tests. Continue reading Fatigue tests
by Robert Pires
This past holiday season, every employee of Hill Engineering was generously gifted a copy of “Land of Wolves: The Return of Lincoln’s Bodyguard.” This book was written by Hill Engineering friend and collaborator, TJ Turner. The historical fiction thriller—set in an alternative historical timeline in which Abraham Lincoln was saved from assassination—is the page-turning sequel to “Lincoln’s Bodyguard,” which was also gifted to the Hill Engineering employees back in 2015. Continue reading Land of Wolves
by Adrian DeWald
In previous blog posts we have discussed various issues related to residual stress in welding. Here, we’ll follow up with a more detailed look at residual stress in additive manufactured parts, which is a form of welding. Additive manufacturing processes, including powder and wire-fed E-beam and laser, produce residual stress as an undesired consequence. Residual stress in additive manufactured parts results from thermal cycles, temperature gradients, and localized plasticity. Continue reading Residual stress in additive manufacturing
by Adrian DeWald
Hill Engineering gave a presentation about fatigue analysis of pipelines at the 2018 Pipeline Pigging & Integrity Management (PPIM) Conference in Houston, TX. PPIM is the industry’s only forum devoted exclusively to pigging for maintenance and inspection, as well as pipeline integrity evaluation and repair. Hill Engineering’s presentation, titled “Is the Paris Fatigue Crack Growth Relation the Only Model Appropriate for Pressure Cycle Fatigue Analysis of Pipelines,” included an overview of various fatigue analysis models for pipeline fatigue crack growth assessment. The abstract text is presented below. Continue reading Hill Engineering at Pipeline Pigging & Integrity Management Conference
by Camille Fowler
Hill Engineering has proudly named the primary conference room in our new facility the Prime Room, a tribute to special Hill Engineering collaborator and inventor of the contour method, Mike Prime. We were recently honored to have Mike stop by for a ribbon cutting ceremony celebrating the opening of the Prime Room. In addition to the ceremony, Mike also gave a presentation about the history of the contour method and how it almost didn’t happen. Click on the video below to view Mike’s presentation and see how the contour method grew from one man’s curiosity to what it is today. Continue reading Mike Prime: a history of the contour method
by Camille Fowler
The end of 2017 at Hill Engineering had a couple fun family events. When we’re not measuring residual stress, we are actually a pretty lively bunch that enjoys a variety of activities. Continue reading Hill Engineering 2017 social events
by Adrian DeWald
We would like to welcome Bruce Anderson to Hill Engineering. Bruce has over 26 years of experience using NX 3-D CAD software. As a Senior Engineer for Hill Engineering, Bruce’s responsibilities will include: overseeing the modification of A-10 legacy product definition to Model Based Definition (MBD) effort at Hill Air Force Base, working with A-10 engineers to develop and implement best practices and policy, providing guidance to subcontractors to ensure proper Computer Aided Design and Drafting (CADD) models are delivered to the government, and working with prime contractors to ensure a quality deliverable to the Air Force. Bruce is also actively involved with implementation and management of Teamcenter Product Lifecycle Management (PLM) system within the A-10 community and oversees the MBD (Model Based Definition) design effort on the A-10 Wing Replacement Program. Continue reading Welcome Bruce Anderson
by Adrian DeWald
This past year was another successful one for Hill Engineering. We have accomplished so much and we wanted to take a moment to recognize some of the highlights. Continue reading 2017 Highlights at Hill Engineering
by Adrian DeWald
We would like to welcome Doug Bateman to Hill Engineering. Doug has over 20 years of experience in the Aerospace industry with organizations including Boeing, Lockheed Martin, Gulfstream, and ATK. As a Senior Engineer for Hill Engineering, working out of our Layton, UT office, Doug will support efforts with the A-10 3-D Model Based Definition initiative, facilitating the transformation of A-10 Mechanical Systems Product Definition (2-D drawings) to 3-D MBD. Continue reading Doug Bateman Joins the Hill Engineering Team