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.
Industry News | 2021-08-13 08:37:00.0
Circuit Technology Center announces that it has recently purchased and commissioned an Oxford 980 X-Strata series XRF (x-ray fluorescence) system to support the testing of electronic components for restricted substances such as lead or tin above specified limits. The system can also verify the coating thickness. Defense base customers often require XRF verification testing of components after components have been processed through lead-free to leaded solder alloy exchange for tin mitigation applications. XRF testing may also be required to verify RoHS compliance of components that have been re-balled or re-processed for lead-free applications. In addition to XRF testing, Circuit Technology Center also supports ionic cleanliness testing, X-ray, Acoustic Microscopy, Solderability, and BGA ball shear testing services.
Consisting of multiple laminates and differing dielectric constants, this multilayer (displayed right) is a mixed-dielectric printed circuit board which was manufactured for the Aerospace Industry. Multilayer Mixed Dielectric PCB Specifications:
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We are Wave Technology from India. We are Electronic Manufacturing Services provider, we do PCB assembling services for all the electronics product.
Industry News | 2016-09-02 03:22:09.0
We present the market leading Condor Sigma W12, equipped with a rotating 13500W 518x513mm heater stage that can uniformly warm up your sample to temperatures up to 175°C. The system is designed for die shear testing on large rectangular glass carriers and 12 inch round carriers, to test glued or solder interconnections on a coating.
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Fully automated assembly, advanced product introduction processes. ISO quality system compliance, high standards for medical, military, and other discerning markets. Quick turn prototyping, lower cost per engagement inc. low volume prod.
Bob Willis videos show you How to Do It each month. This month we talk about adhesion testing like copper foil, plated copper on PCBs or conformal coating adhesion to board assemblies. Adhesion testing can be used for many different materials and in
This multilayer, high-frequency coupler, shown above, is used within a communications application for the telecom industry. Multilayer High Frequency Coupler Specifications: Product Description This Multi-Layer High-Frequency Coupler is used with
This PCB design utilizes surface mount technology Product Description This Double Sided Printed Circuit Board is a simple Surface Mount Technology PCB and is used within an Electronic Instrumentation Application Capabilities Applied/Processes Shea
Industry News | 2016-12-21 11:15:14.0
Driven by emerging technology and to suit customer special requirements XYZTEC Condor Sigma's comprehensive range of bond tests is always increasing. One of our latest applications made scratch testing of complex coating much easier to achieve and increased throughput by several orders of magnitude.
