Portable Micro-Indentation Tester for Pressure Vessel Residual Stress Detection

Engineered for modern industry needs, the Micro-Indentation Tester by Wuxi Zhanghua enables real-time, non-destructive assessment of key mechanical parameters.

Its versatility allows users to analyze tensile strength, hardness, yield stress, and residual stress within 10 minutes—without interrupting operations. Compact, mobile, and reliable, it ensures equipment integrity and safety monitoring in sectors like energy, petrochemical, and pharmaceutical manufacturing.

Compact and lightweight (3–10 kg), this portable system provides rapid, reliable test data within minutes. Its multifunctional capabilities include measuring tensile and compressive stress, welding residual stress, hardness, yield strength, and strain hardening exponent, all without damaging the tested surface.

Multi functionality: The device is versatile, capable of measuring tensile/compressive stress & welding residual stress, hardness, strain hardening exponent, and yield strength. It uses non-destructive testing to assess the "inherent safety" of service equipment.

Main Differences Between Indentation Tester and Traditional Testing Methods:

Non-destructive (Traditional methods are mostly destructive tests, such as impact tests, bending tests, and tensile tests).

Versatility (Traditional testing requires a variety of testing machines to obtain the aforementioned data).

Rapid response. The indentation tester can produce test data within approximately 10 minutes, whereas traditional testing methods can take several days.

Portability. The indentation tester completes measurements directly at the equipment site, whereas traditional methods generally require returning to the laboratory to conduct various tests.

Micro-indentation Technology       Traditional Methods    

✅ Non-destructive                                  ❌ Requires sample cutting    

✅ Portable & efficient                             ❌ Laboratory-dependent    

✅ Multi-parameter output                      ❌ Single-parameter testing    

✅ Cost-effective                                       ❌ High preparation costs    

✅ Supports online testing                       ❌ Offline operation    

Industry Standards & Certifications  

- National Standards: GB/T 39535-2020, GB/T 21933-2019  

- International Standards: ISO/TR 23381 (mechanical properties and residual stress testing)  

- Korean Standards: KS 80550 (indentation tensile property testing)  

- ASME Codes: Code Case 2703 (alternative hardness testing)  

- Awards: Gold Medal at the Geneva International Exhibition of Inventions