Utilizing Weathering Effect to Understand Squeak Risk on Material Ageing Mahindra and Mahindra Limited

Format:

Book

Conference/Event

Author/Creator:

Lewis, Edlin, author.

Contributor:

Kumar, Amit

Mohammed, Riyazuddin

R, Prasath

Shukla, Sandeep

Conference Name:

Symposium on International Automotive Technology (2021-09-29 : Pune, India)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Squeak and rattle concerns accounts for approximately 10% ofoverall vehicle Things Gone Wrong (TGW) and are major qualityconcern for automotive OEM's. Objectionable door noises such assqueak and rattle are among the top 10 IQS concerns under any OEMnameplate. Customers perceive Squeak and rattle noise inside acabin as a major negative indicator of vehicle build quality anddurability. Door squeak and rattle issues not only affects customersatisfaction index, but also increase warranty cost to OEMsignificantly. Specifically, door squeak issues which irritatescustomer generally occur due to incompatibility of materials usedin different interface of door trim. Squeaks are friction-inducednoises generated by stick-slip phenomenon between interfacingsurfaces. Several factors, such as material property, frictioncoefficient, relative velocity, temperature, and humidity, areinvolved in squeak noise causes. For example, door armrest leatheris exposed longer to sunlight and when customer places his hand onthe armrest, an annoying squeak noise is generated due toweathering effect. In this study, an experimental work is conductedto investigate squeak performance of door trim materials againstweather ageing effect. As per the standard SAE-J2412,1000 hours ofpolymer weathering test which is considered equivalent to 5 yearsof product life were performed to door trim material samples.Material compatibility test were performed on door trim samples atdifferent time interval of 0, 250, 500,750 and 1000 hours toevaluate its squeak risk behaviour. On basis of RPN results, it wasfound that some material combination failed at 500 and 750 hourshighlighting squeak risk due to weathering effect. This paperintroduces a new DVP, where a process can be established formaterial selection and avoid customer perceived quality issues notonly for a new vehicle but even after mileage degradation

Notes:

Vendor supplied data

Publisher Number:

2021-26-0280

Access Restriction:

Restricted for use by site license