Environmentally assisted cracking (EAC) is the cracking of a material due to interaction of a susceptible material under tensile stress (applied or residual) in a particular environment, often resulting in brittle fracture of an otherwise ductile material. Environmentally Assisted Cracking can occur under static or dynamic mechanical loading.
Capability – At TTL, we have specialized fixtures for stress corrosion, hydrogen embrittlement and corrosion fatigue testing. Stress corrosion tests can be conducted under constant strain, constant load or slow strain rate conditions in a variety of environments.
Some relevant standards:
Corrosion resistance testing assesses the impact of corrosive atmospheres on components, coatings, etc. In corrosion testing materials and components are exposed to corrosive atmospheres to assess the impact of on material performance and/or appearance. Test conditions in standard tests are designed to accelerate corrosion that may occur in service environments. Capability – At TTL, we… Continue Reading
Fatigue testing measures the response of materials to repetitive loading. All equipment will experience mechanical, thermal, and environmental load repetitively during service, which will lead to failure of the components. These components may be metallic, polymeric, ceramic, and / or composite. Failures, when components experience repetitive loading, are called fatigue failures. Fatigue failures generally occur… Continue Reading
Product testing generally refers to testing finished products before being shipped to customer or consumer. It differs from material testing in that an additional aspect of product geometry, product surface, etc., their influence on the product performance is tested. Some well-known examples of product testing are automotive crash testing to assess crash worthiness of the… Continue Reading
Touchstone is committed to providing its customers with quality, reliable test results. That is why we have undertaken the rigorous steps needed to meet and secure the most stringent of test lab accreditations including ISO/IEC 17025, NADCAP 7101 (Materials Test Lab) and NADCAP 7122-I (Non-Metallics Materials Testing).