Analysis of cracks generated in the spinning-mandrel teeth
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Archives du mot-clef Failure analysis
Biomechanical evaluation of bending strength of spinal pedicle screws
Failure analysis of an MVR mechanical vapor recompressor Impeller
Failure Analysis of a Bearing in a Helicopter Turbine Engine
This article documents the metallurgical evaluation of a rolling element bearing that failed due to electrical discharge damage. This rolling element bearing was used in a helicopter turbine engine that failed in-flight, resulting in a hard landing of the helicopter. Optical and electron microscopy as well as energy dispersive spectroscopy were used to evaluate the bearing. Pitting and material transfer on the external bearing races bearing and mating surfaces revealed that the electrical discharge damage occurred while the engine’s components were not rotating.
Surface Defects in Rails
An other publication of the Asset Standards Authority (ASA), an independent unit established within Transport for NSW of Australia.
This manual provides guidelines for the identification of rail surface defects during track inspections. The manual is part of RailCorp’s engineering standards and procedures publications. More specifically, it is part of the Civil Engineering suite that comprises standards, installation and maintenance manuals and specifications. Manuals contain requirements, process and guidelines for the management of civil assets and for carrying out examination, construction, installation and maintenance activities.
Rail Defects and Testing
An other interesting publication of the Asset Standards Authority (ASA), an independent unit established within Transport for NSW of Australia.
This manual provides requirements, processes and guidelines for the testing of rail for internal defects and for the acceptance testing of rail welds and weld repairs. The manual is part of RailCorp’s engineering standards and procedures publications. More specifically, it is part of the Civil Engineering suite that comprises standards, installation and maintenance manuals and specifications. Manuals contain requirements, process and guidelines for the management of track assets and for carrying out examination, construction, installation and maintenance activities.
Railway Wheel Defects Manual
An interesting publication of the Asset Standards Authority (ASA), an independent unit established within Transport for NSW of Australia.
Wheels with defective wheels may cause damage to both the track and the vehicle or lead to derailment. This Wheel Defect Manual provides staff with a summary of wheel conditions under which wheels may continue in service and operating restrictions imposed for defective wheels found on vehicles operating on the RailCorp network.
The Rail defects Handbook of the ASA
An interesting publication of the Asset Standards Authority (ASA), an independent unit established within Transport for NSW of Australia.
The occurrence of rail defects has generally increased because of the much longer rail lives obtained through various improvements, which have reduced the rail wear and hence have allowed the defects to develop. The main purpose of this Handbook is to describe some of the more common rail defects, their causes, and the possible ways of controlling their development.
Analysis of plastic conveyor Slat belt
A interesting paper in « International Journal of Advance Engineering and Research Development » (IJAERD) published on ijaerd.co.in.
Abstract- McCain Foods, an MNC, manufacturer and supplier of FMCG products located in Gujarat, India was experiencing frequent breakdown in operations. During inspection, the plastic conveyor belt and gear mechanism were suspected. Stress analysis of a standard plastic modular link of different height is done using finite element methods. The mechanical behavior of a standard Slat chain which is loaded by the maximum allowed load are considered. The Finite Element analysis has been proved appropriate tool as compared to theoretical computations
Failure analysis of a laminated front fender
The main goals of this project were the development of the body for an electric vehicle and the study of the front fender. Various aspects related with the project of a fiberglass component were addressed in this work like the choice of materials, and manufacturing processes of composite materials. In order to test the front fender, this was modeled seperatly and imported to ANSYS classic. A model with solid elements and a tailored mesh was developed, having one element per ply in the through the thickness direction and accounting for aspects like contact and laminate layup. Failure analysis was made by a progressive damage model with a set of Hashin type failure criteria.
