Investigation and Analysis of Steering Wheel Leather Peeling Off

Paper #:
  • 2017-01-0320

Published:
  • 2017-03-28
Abstract:
With the development of the automobile industry, customer expectations have also developed. Increasing expectations for handing, performance, comfort level, and aesthetics lead automobile manufacturers to create more and more innovative ideas and applications. However, it also brings the risk of some disadvantages if material or component durability does not receive appropriate consideration. To increase the aesthetics of vehicle interiors, leather material is widely applied for seats, steering wheels, instrument panels, door panels, and other components. To increase the drivers’ comfort level, there is always a soft pad layer or supported foam material applied under the leather in the steering wheel. This paper will describe a failure mode that occurs when dioctyl phthalate migrates from the soft pad layer into the leather surface, causing the leather coating to peel off. The paper will show why this failure happens, how to fix this failure, and an effective test method to verify this failure during the vehicle product design verification process.
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