Now showing items 1-10 of 343
Effect of fiber orientation on the shear behavior of glass fiber/epoxy composites
(Materials & Design, 2015-01-01) [Artigo]
This paper deals with the study of the influence of the lay-up configuration on interlaminar and in-plane shear properties of glass fiber reinforced epoxy composites. The following laminates were produced by resin transfer ...
Fatigue apparatus for geometrically complex non-standardized specimens
(Recent Patents on Mechanical Engineering, 2009-01-01) [Artigo]
Standard Test Methods (e.g. ASTM, DIN) for materials characterization in general, and for fatigue in particular, do not contemplate specimens with complex geometries, as well as the combination of axial and in-plane bending ...
Qualitative and quantitative characterization of aluminium alloys after corrosion testing
(Praktische Metallographie = Practical Metallography, 2001-06-01) [Artigo]
The 2024 and 7050 aluminium alloys used as aircraft components were subjected to laboratory corrosion tests in sodium chloride solution, Light-microscope examinations make it possible to characterise morphological aspects ...
A metallurgical study of aluminium alloys used as aircraft components
(Praktische Metallographie = Practical Metallography, 2001-02-01) [Artigo]
The effects of heat treatment on morphologies and microstructures of Al 2024 and Al 7050 alloys, used as aircraft components, were studied by metallographic techniques. Light microscopy (LM) and quantitative image analysis ...
Residual stress influence on fatigue lifetimes of electroplated AISI 4340 high strength steel
(Fatigue & Fracture of Engineering Materials & Structures, 2007-11-01) [Artigo]
Residual stresses play an important role in the fatigue lives of structural engineering components. In the case of near surface tensile residual stresses, the initiation and propagation phases of fatigue process are ...
An investigation on sliding wear behavior of PVD coatings
(Tribology International, 2010-11-01) [Resumo]
Ti-6Al-4V alloy rubbing against aluminum-bronze 630 was evaluated in this work. High velocity oxygen fuel (HVOF) WC-10%Co-4%Cr thermal sprayed and TiN, CrN and DLC physical vapor deposition (PVD) coatings were applied to ...
Digital Light Microscopy of Macroporous Ceramics Processed by Consolidation Casting with Mixtures of Native Starches
(Praktische Metallographie = Practical Metallography, 2008-12-01) [Artigo]
Porosity in starch consolidation casting technique is rightly related to original size and morphology of starch granules, leaving a pore structure after burning out. This work reports the results for the addition of different ...
Microstructural characterization of Ti-added ultra-low carbon interstitial-free steel submitted by drawing test
(Electron Microscopy 1998, Vol 2, 1998-01-01) [Trabalho apresentado em evento]
Determination of the volume fraction of retained austenite in a 300m steel by heat tinting technique
(SAE Technical Papers, 2007-12-01) [Trabalho apresentado em evento]
Applying the Heat Tinting Technique the microestrutural characterization of a 300M steel (medium carbon steel) was accomplished. The steel was austenitized for 20 min to 900°C, followed by holding at 400°C (in the bainitic ...
The significance and determination by image analysis of microcrack density in hard chromium plating
(Plating and Surface Finishing, 2008-04-01) [Artigo]
It is well known that the microcrack density is a fundamental parameter in hard chromium electroplating. The chemical and mechanical properties of this coating are widely dependent on its microcrack density. In this paper ...