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Key terms Chain scission. The breaking of long polymer molecules into shorter chains, reducing molecular weight. Driven by heat, shear, and oxidation during use and reprocessing.  Post-consumer recyclate (PCR). Material recovered from products that have completed their intended use and been collected from end users.  Post-industrial recyclate (PIR). Material recovered from manufacturing scrap, trim, or…

How to validate the performance of recycled and sustainable plastics Reprocessed polymers inherently differ from virgin materials, so validating their performance calls for a deliberate, standards-led approach. This explainer sets out why recycled plastics need their own testing strategy, which properties to measure, how the core test methods work, and how to build a defensible…

What is recycled and sustainable plastics testing? Recycled and sustainable plastics testing is the structured measurement of the mechanical, flow, and durability properties of polymers that contain recycled content, carried out so manufacturers can confirm the material performs as required for its end use. It is a core part of quality control and R&D for…

Key terms Impact testing  A test method measuring the energy a material absorbs when struck by a sudden, high rate force. Used to determine toughness, brittleness, and shock resistance.  Izod impact test  A pendulum based impact test where the specimen is clamped vertically with the notch facing the striker. Governed by ISO 180 and ASTM…

Overview Pendulum impact testing is the most widely used method for measuring a material's toughness. A weighted hammer is released from a known height, strikes a clamped specimen, and the energy absorbed at fracture is calculated from the height the pendulum rises to after impact. The result, expressed in joules, tells quality, R&D, and operations…

Definition of Impact testing Impact testing measures how much energy a material absorbs when struck by a sudden, high rate force. The energy absorbed at the point of fracture indicates the material's toughness, brittleness, and resistance to shock loading. Impact testing is a core requirement across plastics, polymers, composites, ceramics, and non ferrous metals, and…

Greater understanding of impact resistance of polymers and composites leads to materials and application innovation across a wide variety of industries. Along with quality assurance and standard reference data, impact testing also provides a fundamental understanding of a materials structure and allows for assessment in relation to end-use function. Advanced Impact Analysis Advanced impact analysis…

The automotive industry is an incredibly complex one. Today’s cars are incredibly powerful and also have intricate electrical systems as well as new technology, like sophisticated driver-assistance systems that enhance driver experience and safety. With so many varied components to consider, there are also a high number of safety standards to bear in mind –…

When it comes to the automotive industry, safety is always going to be a key concern. Manufacturers need to know that their vehicles are safe, reliable, profitable and as environmentally friendly as possible – and a complete and thorough testing process is an essential part of getting any new vehicle on the road.   From testing…