Functional testing involves practically using the product to confirm that it works as it should. For instance, if it is a computer desk set, do the legs wobble or rock when you use it, or is it stable and firm? If it is ipad cover, is it able to uphold the ipad properly? If it is a jacket, willl zipper work properly?
Function Testing for Apparel and Footwear
For apparel and footwear inspections, the inspectors perform physical tests on the products to determine the strength of buttons, zippers, and other accessories with pull tests, fatigue tests, and stretch tests.
Fabric density and composition tests determine the density or thickness of fabrics used in garment production. Special tools are used to measure fabric density. The quality control inspectors can also physically count the number of stitches per inch.
A fabric that’s too thin or not dense enough could mean your manufacturer has used an inferior fabric or textile that won’t stand up to normal wearing and washing.
Mechanical Safety Tests
Mechanical safety tests are required for products with moving parts such as bicycles and pushchairs that could potentially cause injuries if they are defective.
The inspection involves testing the product’s shape and design to see whether there are any sharp edges or parts that could pinch or entrap fingers, toes, and other appendages.
Mechanical safety testing includes checking the safety of critical components such as screws and hinges used in a completed product.
Electrical Safety Testing
Electrical and electronic products must be tested to ensure they comply with a wide range of safety regulations before they can be certified and labeled. Evaluating a product for electrical safety is often performed under laboratory conditions rather than on-site at the factory. It includes the following tests:
- High voltage test (dielectric withstand test) – Measures the ability of an electrical product to withstand a high voltage applied between a product’s electrical circuit and the ground.
- Leakage current test – Evaluates whether current that flows between an AC source and the ground exceeds a specified limit.
- Insulation resistance test – Calibrates the quality of the electrical insulation used.
- Ground continuity test – Ensures that a clear path is available between all exposed metal surfaces and the power system ground.