Investigation of weight reduction of automotive body structures with the use of sandwich materials

The use of sandwich materials in automobile body panels is investigated in this study. In the first part, floor, luggage, firewall and rear wheel panels of a car body-in-white are replaced with panels made of sandwich materials in order to reduce the weight. Final sandwich material configurations are obtained through a trial and error based optimization approach where weights of the panels are minimized while keeping bending stiffness performances of the panels same. In the second part, the use of sandwich materials in laminated steel form as light weight alternatives to free layer surface damping treatments attached to floor panels is investigated. Free layer damping treatments are applied to body panels to decrease primarily the structure-borne noise inside the cabin. This effect is achieved by increasing structural damping in the panel structures. It has been demonstrated that, same level of vibration damping increase in a floor panel can be achieved using a sandwich material in laminated steel form with a lesser amount of weight addition to the original sheet metal floor panel compared to a free layer surface damping treatment. (C) 2016 The Authors. Published by Elsevier B.V.


Investigation of the use of sandwich materials in automotive body structures
Hara, Deniz; Özgen, Gökhan Osman; Department of Mechanical Engineering (2012)
The use of sandwich structures in automobile body panels is investigated in this thesis. The applications on vehicles such as trains, aeroplanes and automobiles, advantages, isadvantages and modelling of sandwich structures are discussed and studies about static, vibrational and acoustic benefits of sandwich structures by several authors are presented. The floor, luggage, firewall and rear wheel panels in sheet metal form is replaced with panel made from sandwich materials in order to reduce the weight obta...
Investigation of non-methane volatile organic carbon emissions from interior materials used in the intercity buses
Görmez, Baran; Atımtay, Aysel; Department of Environmental Engineering (2004)
The objectives of this study are to determine the non-methane volatile organic carbon emissions from the parts used in the interiors of buses at different temperatures and to analyze the components of these emissions. The total non-methane volatile organic carbon (NMVOC) concentrations in various sections of a bus were measured in order to determine the indoor air pollution in the bus. Different samples of the materials used in the interior parts of the buses were provided by the manufacturing company and t...
Analysis and Design of Passive and Active Interconnected Hydro Pneumatic Suspension Systems in Roll Plane
Sağlam, Ferhat; Ünlüsoy, Yavuz Samim (2015-05-19)
In this study, analysis and design of a half car model in roll plane with passive and active unconnected and interconnected Hydro-Pneumatic (HP) suspension systems are made. An interconnection configuration with a connection between the piston side oil volume and rod side oil volume of the right and left suspensions, respectively, is considered. The performance of the active unconnected HP and interconnected HP suspension systems are compared in terms of ride comfort and handling. Nonlinear mathematical mod...
Characterization of the MgO/GaSe0.5S0.5 heterojunction designed for visible light communications
Qasrawi, A. F.; AlGarni, S. E.; Hasanlı, Nızamı (2015-11-01)
In this study an optoelectronic design is reported and characterized. The device is made of p-type MgO solved in sodium silicate binder and n-type GaSe0.5S0.5 heterojunction. It is described by means of X-ray diffraction, optical absorption and reflection in the incident light wavelength range of 190-1100 nm and by means of dark and 406 nm laser excited current (I)-voltage (V) characteristics. The optical reflectance was also measured as a function of angle of incidence of light in the range of 35-80. The s...
Investigation of the effects of temperature on physical and mechanical properties of monolithic refractory made with pozzolanic materials
Mörel, Bayram Murat; Turanlı, Lutfullah; Department of Civil Engineering (2005)
In recent years, scientific studies are carried out to find new refractory material. Having good mechanical properties under very high temperatures, refractories are widely used in industries like iron, steel, glass, cement and pottery. Researches are focused on monolithic refractory making because of their superior properties comparing to conventional firebrick refractories. Providing a mono-block body, having no joints makes the monolithic refractories more durable at elevated temperatures. Easier product...
Citation Formats
D. Hara and G. O. Özgen, “Investigation of weight reduction of automotive body structures with the use of sandwich materials,” 2016, vol. 14, Accessed: 00, 2020. [Online]. Available: