Battery - Vibrationdata Engineering Blog

Sandbags & Resonance: Measuring How Tightly an EV Battery Pack Is Coupled to the Car

July 20, 2026July 12, 2026 by Tom Irvine

A new paper from Hamburg University of Applied Sciences proposes an elegantly simple field method — add mass, watch the resonance shift — to quantify how structurally integrated a battery pack is in a vehicle. The modal mass estimate at its core draws on a… Read more

Surface Ship Shock, SRS, DDAM, MIL-DTL-901, UNDEX

July 22, 2026July 7, 2026 by Tom Irvine

The image shows a MIL-S-901D Barge Test. A reader recently wrote in with two requests: (1) blog posts on surface ship shock and shock response spectra derived from acceleration data, and (2) coverage of underwater explosion (UNDEX) shock effects on submerged components such as batteries.… Read more

MV Tacoma Ferry Vibration

July 19, 2026September 7, 2021 by admin

The MV Tacoma is a ferry that runs between Seattle and Bainbridge Island. MV stands for “motor vehicle” and is used to designate a ferry. The ferry’s size class is “Jumbo Mark II.” The total engine power is 16,000 hp from 4 x EMD 16-710G… Read more

Shock Severity Limits for Electronic Components

July 19, 2026June 17, 2014 by admin

Shock and vibration environments produce dynamic stresses which can cause material failure in structures. The potential failure modes include fatigue, yielding, and ultimate stress limit. F.V. Hunt wrote a seminal paper on this subject, titled “Stress and Stress Limits on the Attainable Velocity in Mechanical… Read more

Lithium Battery Vibration Hazard

July 19, 2026August 8, 2013 by admin

N571UP, the aircraft involved, seen taking off from Dubai in November 2008 * * * A UPS Boeing 747-400 flying between Dubai International Airport and Cologne Bonn Airport crashed close to Dubai airport, killing the two crew members, on September 3, 2010. The aircraft had… Read more