Where can I do a failure analysis of plastics? I m using it for furniture, and the customer said he

Apparent phenomenon of plastic product failure.

Discoloration, deformation, embrittlement.

Plastics used in furniture are generally to be enhanced and modified.

The cracks you are talking about may be: design defects (insert walls are too thin, etc.), plastic raw materials are contaminated or not fully dried with moisture, too much proportion of raw materials added to the recycled material or too many times of recycling, internal stress generation of products, etc.

Deformation is not rigid enough, and a small amount of glass fiber can be added.

There is no testing agency for failure analysis of plastic products.

Generally, plastic products are tested.

Impact strength, tensile strength, heat deflection temperature, etc.

If the product does not meet the requirements specified by you, the product is invalid, and you can take a plastic sample to the supplier.

To see is to believe! That's the most powerful proof!

You can do it yourself.

Failure Mode and Effect Analysis (FMEA) is a comprehensive analysis of potential problems that may occur in the design, process and use of products, and proposes corresponding prevention and improvement measures.

The most important way to do this is the fishbone diagram. Identify the possible causes of the problem, the real cause and propose prevention and improvement measures from the human-machine material ring.

You need to define the severity of the problem, the probability of occurring, the difficulty of detection, etc. The development of a standard format for FMEA should generally be submitted to the customer before the official mass production.

This thing needs to be summarized for a long time, and the problems that you estimate should be written, and the problems that you did not predict but occurred, and the reasons for confirming the reasons and submitting temporary improvement measures and permanent improvement measures (effective) should also be written. Let's do the FMEA in terms of usage first, and submit it to your customers.

To add that the friend above is "man-machine material law ring".