Vibration Research- Speaking Events

Upcoming Speaking Event Schedule

Fatigue Damage Spectrum: Product Failure and Analysis

Date: March 15, 2018; Thursday 11:25am

KINTEX, Goyang, South Korea

David Yoon will be presenting at the Automotive Testing Expo 2018.


Abstract: Fatigue damage is a common and predictable cause of damage in the supply chain. The Fatigue Damage Spectrum (FDS) is an abstraction that helps engineers make decisions in several different ways. First, the FDS can be used to design and shorten a random vibration test based on combined time domain data. Second, the FDS can be used to compare time-domain waveforms in terms of fatigue. Third, being able to quantify the end-use environment to the vibration profiles running on the shaker gives confidence when going from field to lab. The ability to combine, compare and quantify environments and testing makes the FDS a powerful tool for test design and product analysis.

Ryan B

Analyzing Field Environments to Validate Old Test Methods and/or Generate New Test Methods

Date: March 23, 2018; 11:30am-12:00pm

Marriott Marquis San Diego Marina, San Diego, CA

Jade Vande Kamp will be presenting at the ISTA TransPack Forum.


Abstract: Is a current test method valid? Are there other tests that could better represent a products end-use environment? How can existing test methods be compared to real world measurements? These questions are becoming more common in the testing industry. Creating the perfect replication of all the field environments a product may be exposed to is a time-consuming task, but undertesting a product can have severe repercussions in the future. In this case study, a product has a known failure mode that occasionally occurs in the field, but never is replicated in the current laboratory testing methods. The overall goal is to generate a test that is more representative of the real-world and in turn, replicate the failure mode observed in the field. There are several comparisons completed throughout the study. First, the original test method comes into question as we compare the response of the product during vibration testing to the actual field recordings. Second, a new test is developed based on the input vibration of a variety of field environments the product is exposed to. Finally, the new test is validated by comparing the product’s vibration response to that of the field environment and replicating the same fatigue failure observed in the field via the new test in the laboratory.

Ryan Becker

Non-Linear Resonance Phase Tracking

Date: April 11-12, 2018

Querétaro Convention Center, Querétaro, Mexico

Ryan Becker will be presenting at the ATS Testing Show Mexico


Abstract: Traditionally, when test engineers performed “Sine Resonance Track and Dwell” tests they have controlled the frequency of the resonance with little concern for the phase. There is a significant difference in the product response based on the phase used to track the resonance. Manually controlling the phase can produce better results by finding the most accurate location for the peak transmissibility. Adjusting the phase as necessary serves as an improvement over the traditional resonant frequency phase-tracking method. Engineers are encouraged to maximize the transmissibility value of the resonances while maintaining high quality control.

Kevin Van Popering

A Primer on Fatigue Damage Spectrum (FDS) for Accelerated and Reliability Testing

Date: May 1, 2018

Caribe Royale, Orlando, FL

Kevin Van Popering will be presenting at the ESTECH 2018


Abstract: Products experience a variety of vibration stresses in their end-use environment. Eventually, the accumulation of these stresses, or the accumulated fatigue damage, causes a failure in the product. New features in random vibration testing can reliably simulate the full life-cycle of a product in its end-use environment. This innovative process includes the ability to combine many different vibration environments into the same test profile, as well as accelerate the vibration test. Utilizing this method can aid in identifying whether test environments damage a product in the same frequency range as the end-use environment.

Jordan Van Baren

A New Method of PSD Estimation

Date: May 22-24, 2018; Day 2 at 3:55pm

Pasadena Convention Center, Pasadena, California

John Holler will be presenting at the Space Tech Expo USA.


Abstract: it is vital that a random test consistently meets power spectral density (PSD) requirements throughout the test. By nature, random averaging requires time to present in-tolerance and smooth spectral lines. This presentation discusses Vibration Research’s newly developed method of PSD estimation, iDOF®, which provides an accurate and smooth PSD estimate without requiring traditional averaging time. This is the best method available to ensure that a random vibration test meets PSD requirements throughout the test.

**More speaking events, tbd


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