... , 2000 , p. 1298 . 7 Grujicic , M. , 2009 , “ Total Life Cycle-Based Materials Selection for Polymer Metal Hybrid Body-in-White Automotive Components ,” J. Mater...

... as a function of time. Low-Reynolds-number viscous flows are considered since these best represent the flow conditions for a polymer melt within a mold cavity. This approach is first used to verify Jeffery’s orbit (1922) and addresses such issues as the role of a fiber’s geometry on the dynamics of a single...

... 07 2010 10 09 2010 10 09 2010 laser beam welding pipes plates (structures) polymers shear strength Laser transmission welding is a technique used to join thermoplastic parts. It requires that one of the parts to be joined is absorbent and the other be transparent...

...Thor Eusner; Melinda Hale; David E. Hardt Polymeric substrates have significant advantages over silicon and glass for use in microfluidics. However, before polymer microfluidic devices can be mass produced, it must be shown that the manufacturing method used to create these devices is robust...

...Anubha Bhatla; Y. Lawrence Yao Crystallinity of semicrystalline polymers such as aliphatic homopolymer poly( L -lactic acid) (PLLA) affects their degradation and physical properties. In this paper, the effects of laser irradiation using the third harmonic of a Nd:YAG laser on the crystallinity...

... geometry is presented, which improves homogeneity of the plastic deformation and decreases the pressing force required for extrusion. Then, a typical semicrystalline polymer (high density polyethylene) was subjected to multipass ECAE using two different processing routes: route A where the sample...

.... The chip formation in plain polycarbonate (PC) is seen to be influenced by the ductile failure mode. For the composite containing 1.75% by weight of CNTs (Composite A), the polymer fails in the ductile mode. The presence of CNTs is seen to result in CNTs protruding from the machined surface and subsurface...

...A. Dikshit; J. Samuel; R. E. DeVor; S. G. Kapoor A microstructure-level finite element machining model has been developed to simulate the machining of carbon nanotube (CNT) reinforced polymer composites. The model integrates a failure model with a previously developed microstructure-based material...

... is developed to characterize the microstructure of composites having different loadings of carbon nanotubes. The Mulliken and Boyce constitutive model [ 2006, “Mechanics of the Rate Dependent Elastic Plastic Deformation of Glassy Polymers from Low to High Strair Rates,” Int. J. Solids Struct., 43(5), pp. 1331...

... orthopaedics polymers scanning electron microscopy tissue engineering The scaffolds designed for tissue engineering applications should be three-dimensional, highly porous, and interconnected to support cell attachment as well as proliferation. The scaffolds should offer ideal and critical...

... fabrication process for porous polymer is developed using high intensity focused ultrasound. This acoustic method is solvent-free and capable of creating interconnected porous structures with varying topographical features at designed locations. An experimental study on the selective ultrasonic foaming...

... strength of 10.0 MPa . Gaps were successfully bridged with LTW by using a two-dimensional model to design the operating parameters. To achieve higher modeling accuracy, a three-dimensional model might better simulate the thermal diffusion in the direction of laser travel. laser beam welding polymers...

... samples are subject to stress concentrations at the edge of the weld line. The weld widths demonstrated in this work are smaller than the stem of the T in order to prevent extrusion of melted polymer, or flash, outside of the T-joint geometry. Because the welds are not at the full width of the stem...

...R. J. Chang; Y. L. Wang A precision-scaling kinematic model with the effects of physical error is investigated in the miniaturization of four-bar polymer machines with compliant joints. A pseudolinkages model (PLM) for the multiple-links compliant machine is formulated. A scaling formulation...

... are fabricated by direct laser machining on polymer materials. Laser-machined microlenses are replicated by electroforming to obtain inverse metal molds. Finally, plastic microlenses are replicated from these metal molds using hot embossing method. The profile accuracy and surface roughness of the produced...

...Douglas E. Smith; Qi Wang It is common for materials processing operations to have adjustable features that may be used to improve the quality of the final product when variability in operating conditions is encountered. This paper considers the polymer sheeting die design problem where variability...

... 04 2005 polymers adhesives automobile manufacture adhesive bonding assembling curing adhesion crystal microstructure fracture voids (solid) hardening scanning electron microscopy automobile industry heat treatment noncrystalline defects In recent years, adhesive joining...

...Li Liu; Jyhwen Wang Metal-polymer-metal laminate is an emerging material that has many potential applications. The laminated structure consists of two outer layers of sheet metal and a polymeric center core. The material offers excellent sound deadening properties and is being introduced...

... is that the nonlinear model considers both the machine hydraulic actuator and polymer flow characteristics in extensive detail. The simulation model is validated against experimental data and demonstrates the availability of a relatively accurate system model for full cycle control design of this electro-hydraulic...

... AND ENGINEERING . Manuscript received November 1999; Revised February 2001. Associate Editor: S. Smelser. 01 November 1999 01 February 2001 29 04 2002 laser beam machining polymers manufacturing processes laser beams Laser beam quality plays an important role in quality...