Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Manufacturing of polymer matrix composites using vacuum assisted resin infusion molding

Goren A., Atas C.

Archives of Materials Science and Engineering

2008

Vol. 34, nr 2

117-120

Purpose: The purpose of the paper is to manufacture the polymer matrix composites using vacuum assisted resin infusion molding. Design/methodology/approach: Electrical heating resistances are used for heating of table. The temperature control is achieved by means of acquiring temperatures using thermocouples located beneath the table surface. VARIM table is divided into eight regions. Each region has an independent closed loop temperature control system. Findings: By using a PLC and a touch screen, the system is capable of adjusting the desired temperatures, up to 200°C, and corresponding time intervals for curing cycles. The main advantage of using a PLC as a control unit for this system is to have a flexible control for changing the cure conditions. Research limitations/implications: The setup is capable of controlling the level of vacuum and the temperature of the heating table, single sided tool. By using the VARIM system, high quality and void-free composite plates are fabricated. Originality/value: The paper is supposed to give significant tips to researchers who intend to setup and utilize VARIM technology in their works.

Residual stress analysis and plastic zone behavior in antisymmetric metal-matrix laminated composite plates

Atas C., Ozcan R., Aykul H.

International Journal of Applied Mechanics and Engineering

2001

Vol. 6, no 1

53-70

This paper presents a residual stress analysis and plastic zone behavior in antisymmetric aluminum metal-matrix laminated plates. First-order shear deformation theory and Finite Element Method are considered in the solution for small deformations. The plate is meshed into 64 elements and 289 nodes with both simply supported or clamped boundary conditions. Stainless steel fiber reinforced aluminum metal-matrix laminated plates of constant thickness are formed by stacking four layers bonded antisymmetrically. It is assumed that the laminated plates are subjected to transverse uniform loads. Loading is gradually increased from yield point of the plate as 0.0001 MPa at each load step. Load steps are chosen as 100, 150 and 200.