Low cycle fatigue (LCF) is low-cycle endurance testing, where 组件 are subject to mechanical cyclic plastic strains that cause fatigue failure within a short number of cycles. im体育APP provides testing to several industry specifications including ASTM E606, the standard test method for strain-controlled fatigue testing.
Fatigue testing can predict how a material will wear and react throughout its life, or in a high-stress environment. Low cycle fatigue is useful for simulating specific scenarios and investigating real-world failures.
What is the difference between HCF and LCF fatigue?
High cycle fatigue (HCF) uses a low force load over a large number of cycles to cause failure. This generates an SN (stress/number of cycles) curve, which predicts how it will wear over time. 与此形成鲜明对比的是, low cycle fatigue (LCF) uses high levels of force over a smaller number of cycles to stimulate a high-stress environment that might cause a more immediate break. This is measures with a strain vs. 生命曲线.
Low cycle fatigue (LCF) test procedure per ASTM E606
在测试之前, the subject material is first machined and longitudinally polished or ground into cylindrical or flat test specimens with a uniform-gage section. The samples are then loaded into a tension-compression endurance testing machine and subject to repeated stress under a constant strain rate in accordance with ASTM E606. Extensometers are used to control strain range by measuring deformation in the gage section of the specimen.
Typical low cycle 疲劳试验 are targeted to run no more than 100,000 cycles. Test frequency ranges between 0.25 Hz and 5 Hz, depending on material and requirements.
By testing multiple specimens at varying strain levels, S/N or strain-生命曲线s can be developed for the material. ASTM E606 recommends testing at least ten samples to gain statistical confidence in strain-生命曲线s.
The im体育APP advantage
At im体育APP, we can perform a range of 疲劳试验,包括 ASTM E466 high cycle fatigue, ASTM E606 low cycle fatigue, ASTM E2368 thermo mechanical fatigue (TMF) testing, and specialized programs on a range of metals and alloys, 聚合物, 组件, and medical applications.
im体育APP has the unique capabilities required to provide comprehensive low cycle fatigue testing and results, from raw material blanking and specimen machining to precision data acquisition and reliable, comprehensive test reports.
For more information about our low cycle fatigue (LCF) testing or to request a quote, 立即im体育APP.
Fatigue Failure: How can you Tell?
Fatigue failure is an extremely important design consideration for a variety of industries. Learn more about the characteristics of fatigue failure.
im体育官方app下载A Guide to 疲劳测试 in Composite Materials
We explain how composite fatigue testing is performed, 关键方法, how fatigue testing of impact-damaged laminates work, and fatigue crack growth testing.
im体育官方app下载Multiaxial Fatigue Analysis
Multiaxial fatigue analysis replicates real-world service environments' load and stress conditions in controlled laboratory settings to develop safer materials and 组件.
im体育官方app下载相关服务
ASTM E466 High Cycle Fatigue (HCF)
High cycle fatigue is used for materials that experience low applied forces and where deformation is primarily elastic in nature.
ASTM E2368 Thermo Mechanical Fatigue (TMF)
im体育APP's ASTM E2368 thermo mechanical fatigue program provides testing services for a variety of materials qualification programs.
疲劳测试
Find out how im体育APP's fatigue testing labs help companies meet quality requirements and create safer, 更强的, more successful parts and products.
Fracture Toughness 测试
im体育APP provides fracture toughness testing for determining material characteristics and longevity of metallic, 非金属, and advanced materials.