Using FEA as an ICME Tool to Predict the Performance of Structures
Integrated computational materials engineering (ICME) uses analytical and numerical tools to create predictive models. Recently, EWI has published a series of papers examining analytical methods that work well in assessing thermal/mechanical responses in specific joining processes. Some highly complex joining applications, however, require advanced computational tools such as finite element analysis (FEA) to achieve desired […]
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International Automotive Body Congress 2023
IABC 2023: 30 Years of Automotive Engineering Excellence September 27-28, 2023 Laurel Manor, Livonia, Michigan Two EWI associates will present at IABC 2023:
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UIA51 Symposium
Ultrasonic Industry Associate Symposium (UIA51)Hybrid event April 24-26, 2023Grand Hotel Karel V, Utrecht, The Netherlands EWI Project Engineer Amin Moghaddas will present On The Effect of Laser Surface Preparation on the Quality of Ultrasonic Wire Bonding Process in Battery Pack Assembly at UIA51 on Wednesday, April 26th, at 10:00 am EDT. For information about viewing […]
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EWI Associates Are Contributing Authors of Book on Power Ultrasonics
Four EWI associates have co-authored chapters in POWER ULTRASONICS: APPLICATIONS OF HIGH-INTENSITY ULTRASOUND, 2nd Edition, edited by Juan Gallego-Juarez, Karl Graff, and Margaret Lucas: Lindsey Lindamood and Mitch Matheny contributed to Chapter 10, “Ultrasonic Welding of Metals.” Miranda Marcus was a co-author on Chapter 11, “Ultrasonic Welding of Plastics and Polymeric Composites.” Amin Moghaddas co-wrote […]
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Transitioning to a Hydrogen Economy: EWI Resources & Services
Addressing the Transmission, Distribution, and End-Use Hydrogen Systems Challenges With the emergence of hydrogen as a zero-carbon energy source, it’s increasingly important to understand the effects of high-H2 environments on materials like steel. EWI is here to support companies in their decarbonization efforts by providing materials testing and evaluation solutions, as well as ongoing research. […]
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Modeling the effect of hydrogen gas on steel pipeline welds
What impact does the presence of H2 have on a pipe weld, and what kind of damage can result from it? These are important questions that must be answered as development of a broad hydrogen infrastructure is progressing. The EWI structural integrity group has created a new modeling approach to examine the hydrogen diffusion into […]
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Ultrasonic Industry Association Symposium (UIA 50)
Ultrasonic Industry Association Symposium 50 A Multi-access event (live and virtual) April 25-27, 2022 University of Warwick, Coventry, England Amin Moghaddas, EWI Project Engineer, will present Development of Sonotrode with Replaceable Tip for Use in Ultrasonic Metal Welding at UIA50 on April 25th. The live presentation will take place at 2:00 pm BST. For online […]
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A Superior Way to Design Sonotrodes for Welding Lithium-ion Batteries
When it comes to joining dissimilar materials in lithium-ion batteries, ultrasonic metal welding is fast and efficient. However, due to tool wear, the sonotrodes used in battery joining have to be completely replaced frequently. EWI has developed a new design approach that uses finite element analysis (FEA) to evaluate ultrasonic welding tools with replaceable knurl […]
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Predicting Failure in Arc-welded Steel Sheets
While spot weld performance has become easy to simulate in recent years, failure models for arc-welded sheet steel have never proved very reliable. Recently, EWI developed and tested a new approach to modeling failure of arc welds used in sheet-steel construction. The work is described in a paper by EWI associates Bill Mohr and Amin […]
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Ultrasonic Metal Welding for Lithium-Ion Battery Cells
A standard electric vehicle (EV) automotive battery can be decomposed into cell level, module level, and pack level. A cell mainly includes the anodes and cathodes, a module includes multiple cells, and a pack includes multiple modules. The three most common metal-to-metal joints in a lithium-ion battery pack are foil-to-tab, tab-to-tab, and tab-to-bus. All three […]
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