'REX' BLIND RIVETS, a range of high speed industrial fasteners are easily installed in blind or open applications, offer high clench, fill up over size holes, offer one length per dia-reducing stock holding, can be used on finished surfaces, gives hi
'REX' BLIND RIVETS, a range of high speed industrial fasteners are easily installed in blind or open applications, offer high clench, fill up over size holes, offer one length per dia-reducing stock holding, can be used on finished surfaces, gives hi
New Equipment | Test Equipment
Application Computer Control Electro-Hydraulic Servo Universal Testing Machine is suitable to test various metallic & non-metallic materials for tension, compression, bending and shearing strength. It can be capable of testing the characters of mate
Epoxy 4089 is a single part, epoxy adhesive used for bonding SMT components to a PWB prior to double sided reflow or wave solder assembly. Epoxy 4089 has been formulated for use in all types of high speed dispensing equipment including air pressure,
New Equipment | Solder Materials
KappTecZ is a high temperature, high strength solder that may be used on most metals, but works extremely well on aluminum, copper and stainless steel. It has a high tolerance to vibration and stress, and good elongation for use on dissimilar metals.
Industry Directory | Manufacturer
BLIND RIVETS,BLIND NUTS,BLIND RIVETING TOOLS,STAINLESS STEEL CABLE TIES
Industry Directory | Manufacturer / Research Institute / Laboratory / School
Manufacturer of surface deposition and plasma surface cleaning and etching equipment offering reliable, repeatable cleaning and etching of PCBs and other materials.
Industry Directory | Manufacturer / Other
STAINLESS STEEL CABLE TIES,BLIND RIVETS,BLIND NUTS,FASTENERS,TOOLS
Industry Directory | Manufacturer
blind rivets,stainless steel cable ties,blind nuts,blind riveting tools,fasteners
Technical Library | 2020-12-16 18:38:49.0
Fabrication of large structures using out-of-autoclave prepreg materials will lead to a great amount of savings in manufacturing costs. In the out-of-autoclave processing method, the presence of voids inside the laminate has been an issue due to the lack of high pressure during manufacturing. This study aims primarily to observe the moisture absorption response of composite samples containing different levels of void. By changing the vacuum level inside the bag during the manufacturing process, three different unidirectional laminates at three levels of void have been manufactured. After immersing the samples in warm water at 60°C for about one year, the moisture absorption level was monitored and then diffusion coefficients were calculated using Fick's law. Results show that the moisture absorption coefficient changes by %8 within the experimental range of void contents. The mechanical behaviour of these laminates has been studied at four different moisture levels by performing dynamic mechanical analysis (DMA) and short beam shear tests. Empirical results indicate that, in general, interlaminar shear strength and glass transition temperature decrease by moisture build-up inside the samples. DiBenedetto equation is proposed to make a correlation between the moisture content and glass transition temperature.
