How to distinguish the advantages and disadvantages of universal testing machines

Abstract: 本文探讨了如何区分多功能试验机（UTM）的优劣。拉力试验机广泛用于测试各种材料的物理机械性能，如塑料、橡胶和电线电缆，是材料开发和质量控制的重要设备。尽管多功能试验机在高负载条件下表现出色，但随着使用时间的增加，设备可能会磨损，性能下降。选择优质试验机的要素包括：保留原始投资的能力、成本效益（尤其是在维护预算内），以及是否能够更换关键部件。旧设备可能不会比新设备便宜很多，特别是在服务和部件更换方面，因此评估成本和效益是关键。

Tensile testing machine is a very versatile testing equipment. It is suitable for testing various physical and mechanical properties of plastic sheets, pipes, profiles, plastic films, rubber, and wires and cables. It is an indispensable testing equipment for material development, physical property testing, teaching research, quality control, etc.

Multipurpose testing machines (UTMs) are reliable workhorses – they can perform hundreds of tests a day, 7 days a week, and maintain the strength required to break specimens under loads of up to 5 kN, 50 kN, and even 600 kN and beyond. generated energy. However, like true workhorses that have been in service for years or decades, they will eventually get old, wear out, and not be as reliable or perform as well as newer replacements

Tensioner fixture is an important part of the instrument. Different materials require different fixtures, which is also an important factor for smooth testing and accurate test results.

advantage

Retains most of the original investment: frame, load cells, accessories
Costs less than new test systems
Considered a maintenance budget item rather than capital equipment in some organizations
shortcoming
Probably not much less than the cost of a new test system, especially for smaller single-column or tabular model frameworks
Costs may not be significantly lower than new systems once service labor becomes a factor
It may not be possible to replace all parts that may fail; if they do fail, the remaining parts may be too expensive or cost prohibitive to replace