GB/T 41490-2022 in English

Analysis of core test parameters

According to the ball-plate method test improved by the ISO14628:2012 adaptation standard, the maximum Hertz stress calculation formula is P_max=(3P)/(2πa²), and the contact trajectory is precisely controlled with an error of <0.015mm. The surface peeling degree of the sample is monitored in real time by the four-ball node vibrometer.

Key technical adaptation items of international standards

Equipment selection technology evolution path

• First generation model (2000-2010)
• Manual load adjustment design, maximum control load 3500 times/minute
• 2015 Shangyi-Constant Range Type
• Dual pressure sensor harmonic vibration reduction platform, contact trajectory optical analysis system accuracy increased by 18.9%
• 2022 Huayan Intelligent Edition
• Support big data hole state prediction, sudden shutdown anti-data topology recovery function

Demonstration test verification case

Take the 5MW wind turbine bearing project acceptance as an example:
The first C695 batch Schatz factor reached WG4.3 standard, the number of rolling cycles of bearing-grade silicon nitride is increased to 18.5×10⁶ times, breaking through technical barriers

Special implementation recommended clauses

Principles for the selection of aerospace materials

The initial load should exceed the 13.7kN/m² baseline by 35% and configure safety redundancy

Steps to avoid false failure judgment

The numerical vibration equation of the experiment must be verified by frequency domain decomposition of Gabor factors

Drive epitaxial optimization items

A gradient amplification piezoelectric compensation strategy is recommended for type II sliding contact phenomena