Materials Testing
November 30, 2010
Materials Testing is performed for a variety of reasons and can provide a wealth of information about the tested materials, prototypes or product samples. The data collected during testing and the final test results can be very useful to engineers, designers, production managers and others.
Here are some of the reasons material testing is important:
- Meeting requirements of regulatory agencies
- Selectingappropriate materials and treatmentsfor an application
- Evaluating product design or improvement specifications
- Verifying a production process
Regulatory Compliance
Many products are used in critical applications where a failure could result in extensive damage or injury. Some examples are manufactured fasteners and parts that have a vital role in maintaining the safety of aircraft, bridges, vehicles, nuclear reactors, military equipment and medical implants. In addition, many jurisdictions have adopted legislation restricting the use of hazardous materials.
In cases like these, governments and regulatory bodies set compliance requirements that must be met by manufacturers. Companies must adhere to these standards, which generally specify test procedures, to prove compliance.
Material and Treatment Selection
The quality of a material going into a manufactured product is as important as the reliabilityof the production process.Materials testing helps us to understand and quantify whether a specific material or treatment is suitable fora particular application.
With the wide variety of materials and treatments available in the marketplace, testing can help narrow down the choices to the most appropriate selection for the intended use. As mentioned before, for many industry applications, testing is performed to certify material to a given standard or specification, or to verify that it meets other stringentcriteria before it is put into use.
Not only is testing commonly relied on for material selection and choosing a reliable supplier, it is frequently used as a verification process to be sure that material received from a new supplier is what was ordered. Material Testing may include methods that yield information about the structure or mechanical properties of the material. It may also make sense toverify the composition or elemental content of the material with an instrumental or classical wet chemical analysis technique.
Product Design and Improvement
It’s typical for a business to purchase mechanical testing services when specifying material for a new product design. Testing may be performed to evaluate mechanical properties such as strength, hardness, elasticity and fracture toughness.Corrosion testing candetermine if the material will hold up under given conditions such as humidity or a salt water environment.
When anapplication requires more durable or more corrosion-resistant metals, this can often be attainedwith the addition of treatments. When appropriate, the material may be heat treated prior to testing to determine that the specified results have been achieved.
In further determiningmaterial characteristics, microanalysis, using microscopes and SEM equipment, can be used toanalyze various surface features and to detect flaws and inconsistencies.
Production Processes
Testing is an essential part of both design and manufacturing processes, not only whensafety is a concern, but also for any company committed to selling reliable products and minimizing damageand costs if problems do surface. Testing is often performed early on duringproduct development to evaluate a planned production process. It can also be just as relevant toprovide validation for final products on an ongoing basis. Various types of non-destructive testing services are used to evaluate finished products without causing damage to the items.
Materials testing also playsa large role in failure analysis investigations to help identify defective products, inadequate materials and, ultimately, the cause of a failure.
When materials testing services are purchased from an independent laboratory like Laboratory Testing Inc., a certified test report is provided that documentsapplicable accreditations,specifications/standards, other test criteria and complete test results.
Contact our team of account managers to discuss how materials testing can help ensure the success of your business.
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