Failure Analysis in Materials Testing

Jan 5
16:00

2010

Daniel Garcia

Daniel Garcia

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Failure analysis is a intricate process applied to all diverse types of supplies. Every group of materials requires special skills and experience to effectively solve the causes of failure.

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The objective of failure analysis is entirely positive: To prevent additional failures. Failures occur when some structure or part of a structure fails to perform up to the expectations for which it was produced. 

The hypothesis of failure is easy to understand intuitively. But underneath that intuitive understanding have essential conceptual principles which are commonly either misunderstood or not considered at all.

A different aspect of failure analysis is associated with No Fault Found (NFF,) which is a expression used in the field of failure analysis to explain a situation where an originally reported mode of failure can't be duplicated by the evaluating technician and therefore the potential defect can't be fixed.

Failure analysis and prevention are essential functions to all of the engineering disciplines. The materials Specialist often plays a lead role in the analysis of failures,Failure Analysis in Materials Testing Articles whether a module or product fails in service or if failure Happens in manufacturing or during production processing. In any case, one must determine the cause of failure to prevent potential occurrence, and to increase the performance of the device, component or structure.

Prognostic technology includes proactive diagnostics, active reasoning and data-driven and model-based prognostic algorithms for completing a prognostic analysis.

Engineering Materials in industry, used to fail pre-maturely if it is designed improperly, or if the supplies selection is inappropriate. This pre-mature failure, will add superior cost to the project. Therefore it is very important to prevent this pre-mature failure by implementing the "Failure Analysis Technique" or Failure Investigation.

A failure investigation and consequent analysis should first identify the type of failure, then determine the root cause of a failure, and based on the determination, corrective action should be initiated that will prevent analogous failures.

Habitually, the importance of contributory causes to the failure have to be assessed; innovative experimental techniques may have to be developed, or an unfamiliar discipline of engineering or science explored. A complex accident investigation, such as investigation into aircraft accidents, typically requires the services of experts in several branches of engineering and the physical sciences, as well as metallurgy. This short course, helps the Specialists (inspection and maintenance engineers) to conduct the failure ivestigation of metallic components. The experimental techniques required, to reveal the form failure, identifying the root cause, and the remedial procedures to prevent it, are going to be discussed and experienced.

Failure analysis of safety-critical and mission-critical equipment on the field use stage requires failure data collection and statistical analysis. Failure data collection and analysis are directly connected with all reliability activities. Failure data collecting must start at the initial stages of systems design and go on through the full product life cycle. Both the suppliers and the users must perform the detailed tracking and analysis of equipment malfunctions and failures.

As a result, the final step is the definition of corrective procedures based on the collected engineering data. The benefits of initial implementation of corrective action become perceptible both to the manufacturer as the failure occurrences decrease at the manufacturing line and in the field.