低周疲劳（LCF）
低周疲劳（LCF）试验是一种仍处于发展阶段的材料试验手段，主要受航空、汽车和发电行业日益增长的需求推动。ISO 12016 和 ASTM E606 中规定了应变控制疲劳试验的标准规范，可用于模拟塑性区内的机械载荷。通常，为了再现涡轮叶片在燃气轮机和喷射发动机中经历的运行条件，该试验需在极高的温度下进行。
尽管加载链和加热技术是所有 LCF 试验系统的重要部分，但 Instron 还为用户提供了两种完全不同的作动缸技术可供考虑。大部分疲劳试验系统由液压驱动，并可提供高动态性能，从而减少完成漫长的高周疲劳试验所需的时间。在使用 LCF 的情况下，通常进行试验的速度极慢，且精确的应力控制比进行高频试验更加重要。Instron 不仅提供适用于 LCF 的传统液压技术，同时还提供独有的伺服电动作动缸，该技术是解决 LCF 挑战的理想工具。选择 Instron 的伺服电动技术可降低新机器对基础设施的要求并尽量降低运行成本。无论哪种解决方案最能满足您的需求，Instron 都会提供配备高横向和轴向刚性的机架以及高精度的同轴度部件，以满足您对 LCF 试验的需求。
Instron 充分了解，LCF 试验的要求与“通用”试验机器的要求完全不同，因此我们也设计了自己的软件工具。专用 LCF 3 软件 能帮助用户更容易地进行复杂试验并在用户需要的第一时间得出结果；该软件具有自动计算功能，可提供实时数据视图，并蕴含强大的后期处理能力。
特点
- 高负荷能力的机架对试验期间过零点应力变化提供了尽可能大的横向和轴向刚性。
- 选用无齿隙、全电动作动缸可进行精确的慢速控制，运行时几乎听不到声音，且没有液压设备对于基础设施的特殊要求。
- 标配 AlignPRO 同轴度备件及调试软件，确保精确调校加载链。
- 三段控温高温炉对试件温度采用串级控制，优化了温度梯度。
- 专用 LCF3 软件包精简了试验设置、滞后迴线、塑性应变测量和通用 LCF 计算。
- 所有的 Instron LCF 系统已全面集成，且供应的系统可随时用于试验，满足所有适用国际标准。
关于 Instron LCF 系统的更多信息，请点击上方“联系我们”，将您的问题或要求发送给我们。
LCF Brochure
Low Cycle Fatigue (LCF) testing is a growing area of materials testing, driven in particular by increasing demand from the aerospace, automotive and power generation industries. ISO 12016 and ASTM E606 specify the standard practice for strain controlled fatigue testing, used for simulating mechanical loading into the plastic region. This testing is typically carried out at very high temperatures to replicate the service conditions experienced by turbine blades in both gas turbines and jet engines.
- 产品
- 2/20/2019
- 2.4 MB
8862 Servo-Electric Testing System
8862 systems have been the industry choice for Low Cycle Fatigue (LCF) testing for decades and are now fully integrated with our latest controller platform. Instron® has developed this system specifically to address the challenges of reverse-stress Low Cycle Fatigue and Thermomechanical Fatigue (TMF) testing. The unique actuator technology utilizes an all-electric, backlash free, ball-screw drive eliminating the need for hydraulic infrastructure to support the machine.
- 产品
- 2/15/2019
- 287.3 KB
High Temperature Water Cooled Hydraulic Reverse-Stress Pullrods - 3117-501
The 3117-501 pullrods reverse-stress pullrods with hydraulic preload designed for elevated temperature Low Cycle Fatigue applications. The pullrods are also suitable for hot tensile tests and other reverse axial stress applications.
- 应用
- 1/16/2019
- 1.0 MB
Electrically Operated Pump with One-Touch Operation | 3117-503
An alternative to traditional manual pressurisation of hydraulic pull rods this integrated electronic solution offers superior repeatability between users and between tests. This unit offers significant ease of use advantages over a manual solution and provides consistent and repeatable clamping and pressurisation.
- 应用
- 1/16/2019
- 0.8 MB
Dynacell Fatigue Rated Load Cells
The 2527 Series load cells are designed for use with Dynamic Testing Systems; offering exceptional performance with the ability to measure forces as low as 1/250th of the force capacity to an accuracy of 0.5% of reading. Automatic transducer recognition and electrical calibration, makes them easy to use. The load cells can withstand loads up to 150% of their force capacity without damage and 300% without mechanical failure. All Instron load cells are individually temperature-compensated and tested for accuracy and repeatability on calibration apparatus that is traceable to international standards, with a measurement uncertainty that does not exceed one-third of the permissible error of the load cell.
- 产品
- 8/17/2018
- 0.8 MB
AlignPRO™ Alignment System
Compliant with ASTM E 1012 standards, the New AlignPRO™ system is designed to assist you in the measurement, adjustment and verification of load string alignment.
- 产品
- 8/9/2013
- 0.7 MB
