Introduction to Brake Noise, Vibration, and Harshness     


I.D.# C1337Printable Description
Duration: 1 Day
  Delivered in
September 21, 2017 (8:30 a.m. - 4:30 p.m. ) - Troy, Michigan    

Hotel & Travel Information

Brake Noise, Vibration, and Harshness (NVH) is recognized as one of the major problems currently faced by the automotive manufacturers and their suppliers, with customers warranty claims of more than $100 million per year for each manufacturer. With increasing consumer braking performance expectations, automotive OEM’s and suppliers need the ability to predict potential problems and identify solutions during the design phase before millions of dollars have been spent in design, prototyping, and manufacturing tooling. This seminar provides an introduction to brake NVH, including a concise summary of the various brake NVH problems, current lab and vehicle measurement techniques and SAE global standards which are utilized to characterize the noise correctly in order to get the best option/solutions quickly. The information provided will serve as an excellent foundation for understanding and characterizing brake NVH issues and is an excellent primer to the SAE Seminar ID# C0831 – Brake Noise Problem Resolution, also taught by instructor Eric Denys.

Learning Objectives
By attending this seminar, you will be able to:

  • Describe NVH and brake NVH
  • Identify the various brake NVH problems
  • Describe the components of a brake NVH dynamometer
  • Configure and perform dyno and vehicle brake NVH tests measurements
  • Utilize SAE J2521, the only international standard for brake NVH dynamometer evaluation
  • Interpret basic noise and vibration data in the time and frequency domain
  • Explain the premise behind various SAE Standards related to brake NVH

Who Should Attend
The information in this course is relevant to a wide audience, from the brake test technician who seeks to understand more about NVH and brake NVH, to the experienced brake NVH engineer who wishes to know more about the details of the tests performed and the meaning of the results. Brake development and brake component engineers who are not familiar with brake NVH will also find the course beneficial.

Participants should have a basic familiarity with brake hardware and basic terminology.

Topical Outline

  • Basics of Noise and Vibration
    • Basic terminology
    • Spectral analysis
    • Modal analysis
    • Sound radiation
  • Basics of Brake NVH
    • Different types of brake noise
    • Why do brakes make noise?
    • Source, path, and receiver description
  • Basic Dynamometer Testing
    • Test set-up
    • SAE J2521 – Disc and Drum Brake Dynamometer Squeal Noise Matrix
    • Data analysis and reporting
  • Vehicle Brake Testing
    • Basic instrumentation
    • Data analysis and reporting
    • SAE J2625 – Automotive Vehicle Brake Squeal Test Recommended Practice
  • Brake SAE NVH Standards Currently Released and Under Development
    • SAE J2598 - Automotive Disc Brake Pad Natural Frequency and Damping Test
    • SAE J2786 – Automotive Brake Noise and Vibration Nomenclature
    • SAE J2933 – Verification of Brake Rotor Modal Frequencies
    • SAE J3001 – Brake Insulator Damping Measurement Procedure
  • Introduction to Brake NVH Problem Resolution

Instructor(s): Eric Denys

Eric Denys is currently the Vice President of Global OE Brake and AM Integration at Wolverine Advanced Materials. He previously worked for Material Sciences Corporation and Federal-Mogul. Throughout his career, Mr. Denys has lead teams to achieve best-in-class in brake squeal on numerous vehicle lines and he is the recipient of the 2001 Ford Global Customer Satisfaction Award for his work on high mileage brake squeal reduction. His work has been published in numerous national and international papers, and in an SAE book on Disc Brake Squeal. Eric is a 6 Sigma Black Belt and is currently the chairman of the SAE Brake NVH Standards Committee. He received a B.S. in Mathematics from the Jean-Bart University, France and a M.S. in Mechanical Engineering from the University of Technology of Compiegne, France and an MBA from the University Of Michigan.

Fees: $810.00 ; SAE Members: $648.00 - $729.00

.7 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

To register, click Register button at the top of this page and submit the online form, or contact SAE Customer Service at 1-877-606-7323 (724/776-4970 outside the U.S. and Canada) or at

For a quote on bringing this course to your company site, fill out a Corporate Learning Solutions Request Form