What is the purpose of FMEA for the three elements of fmea risk assessment?

Date：2022-10-27 11:00:00Views：1359

FMEA is a systematic activity in the product design stage and the process design stage, which analyzes the subsystems and parts constituting the product and each process constituting the process one by one, finds out all potential failure modes, and analyzes their possible consequences, so as to take necessary measures in advance to improve the quality and reliability of the product. This paper collects and sorts out some materials, hoping to be of great reference value to all readers.

Three elements of FMEA analysis

The first element: quantitative risk assessment

Quantitative risk assessment refers to the quantitative assessment of the impact and loss possibility of the risk event on people's life, life, property and other aspects before or after the occurrence of the risk event.

It is also the most important element. The last two elements are all around this element.

Quantitative indicators include three dimensions: Severity, that is, the severity of the risk, Frequency, that is, the frequency of the risk, how often it occurs, and Detection, that is, whether the risk can be known in advance through machinery and equipment.

Second element: list the reasons

According to element 1, identify the corresponding risks, and then rank the risks, analyze them one by one, and list the corresponding reasons for improvement.

For example, the surface of raw materials is rusty with a severity of 7. The main reason is that the packaging of raw materials is not perfect and the storage time is too long.

The third element: looking for prevention/improvement measures

If the cause is found, it needs to be improved and prevented. The measures given in the case are:

Determine packaging standards in agreement with suppliers

Develop packaging inspection procedures for appearance

Train the incoming material personnel on packaging inspection and establish kanban method

Purpose of fmea

·The product or process can be easily modified at low cost, so as to mitigate the post crisis modification.

·Find out the measures that can avoid or reduce the occurrence of these potential failures;

·Point out the weakness of reliability in design and propose countermeasures

·For the required specifications and environmental conditions, use experimental design or simulation analysis to improve the inappropriate design in real time to save unnecessary losses

·Effective implementation of FMEA can shorten the development time and cost

·In the early stage of FMEA development, design technology was considered, but in the later development, manufacturing engineering and inspection engineering can also be applied in addition to the use of design time

·Improve product quality, reliability and safety

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