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Randolph E. Kirchain, Jr. and Richard Roth. Bjelkengren, Catarina Massachusetts Institute of Technology. Dept. of Materials Science and Engineering. Massachusetts Institute of Technology. Department of Materials Science and Engineering 2009-01-30T16:39:52Z 2009-01-30T16:39:52Z 2008 2008 http://hdl.handle.net/1721.1/44384 277139576 Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2008. Includes bibliographical references (p. 121-125). Among consumers and manufacturers alike, there is an increasing realization about the need for fuel efficient vehicles. One effective way to accomplish this is through vehicle lightweighting, which can be achieved by material substitution, novel vehicle component design, and changes in processing. Although primary vehicle mass reduction is often associated with additional costs to the automaker, a decision to lightweight may, depending on when in the vehicle development process the decision is taken, result in additional secondary mass savings such that the value derived from lightweighting is greater than the costs. In this study, the concept of secondary mass savings, or mass decompounding, is developed using regression analysis. Moreover, the full, both primary and secondary, mass savings potential is assessed at different times in the vehicle development process. Lastly, powertrain and market trend modeling are employed to estimate the value of the compounded mass savings in terms of improved fuel economy and acceleration. This methodology is applied to a collected vehicle dataset in order to generate a model by which the value of and the subsystem-specific amount of secondary mass savings may be easily estimated during the early stages of vehicle development. In summary, this analysis may be employed to evaluate the economic competitiveness of vehicle lightweighting options at different times in the vehicle development process. by Catarina Bjelkengren. S.M. 125 p eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Materials Science and Engineering. The impact of mass decompounding on assessing the value of vehicle lightweighting Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="1b5fb6b2-74c9-4f2c-b981-6c47f48d4d46"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>The impact of mass decompounding on assessing the value of vehicle lightweighting</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2008</PublicationDate> <Authors> <Author> <DisplayName>Bjelkengren, Catarina</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Materials Science and Engineering.</Keyword> <Abstract>Among consumers and manufacturers alike, there is an increasing realization about the need for fuel efficient vehicles. One effective way to accomplish this is through vehicle lightweighting, which can be achieved by material substitution, novel vehicle component design, and changes in processing. Although primary vehicle mass reduction is often associated with additional costs to the automaker, a decision to lightweight may, depending on when in the vehicle development process the decision is taken, result in additional secondary mass savings such that the value derived from lightweighting is greater than the costs. In this study, the concept of secondary mass savings, or mass decompounding, is developed using regression analysis. Moreover, the full, both primary and secondary, mass savings potential is assessed at different times in the vehicle development process. Lastly, powertrain and market trend modeling are employed to estimate the value of the compounded mass savings in terms of improved fuel economy and acceleration. This methodology is applied to a collected vehicle dataset in order to generate a model by which the value of and the subsystem-specific amount of secondary mass savings may be easily estimated during the early stages of vehicle development. In summary, this analysis may be employed to evaluate the economic competitiveness of vehicle lightweighting options at different times in the vehicle development process.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>