Skip to main content

Mechanical and Medical Metrology Laboratory

Highlight/Core Technology

National Pt-Ir Kilogram Prototype No. 78 obtained from BPIM in 1995
Highly enriched 28Si sphere   primary mass standard fabricated by PTB Germany in 2018
Orifice-flow method based primary high vacuum standard
  • (Left)National Pt-Ir Kilogram Prototype No. 78 obtained from BPIM in 1995
  • (Center) Highly enriched 28Si sphere primary mass standard fabricated by PTB Germany in 2018
  • (Right) Orifice-flow method based primary high vacuum standard

Introduction

The Mechanical and Medical Metrology Laboratory has established the standards in the fields of mass, force, torque, pressure, vacuum and micro/nano-mechanical property. For the mass standards, a primary mass standard, National Pt-Ir kilogram prototype No. 78, has been set up to provide the weight traceability. To comply with the latest SI re-definition, in which kilogram is defined by the Planck constant, measurement systems and technologies for realizing the new kilogram definition using the X-ray crystal density method (or silicon sphere method) have been established. In the field of force and torque, the calibration services are available for several types of force and torque transducers. In the field of vacuum, the calibration services are developed for varieties of vacuum gauges. In the field of micro/nano-mechanical property, a nano-indentation system and a micro/nano universal tensile test system have been established for measuring young’s modulus and hardness of thin films, devices and materials at micro/nano-meter scale.

Research Projects

New kilogram standard development

  • Sorption effect measurement technique
  • Development of a combined XRF XPS surface layer mass measurement system

Quantum vacuum standard

  • Optical interferometric absolute gas pressure measurement technology

Technical Services

  • Establishment of calibration systems of mass, and volume
  • Consultation of solid density measurement
  • Establishment of calibration systems of standard weights
  • System design, automation and setup of force and torque measurement/calibration systems and related sensing technology developments
  • System design, automation and setup of vacuum measurement/calibration systems
  • Leakage test and assembly services for vacuum measurement/calibration systems
  • Calibration of the Rockwell and surface Rockwell hardness blocks
  • Calibration of the Vickers and micro-Vickers hardness blocks
  • Calibration of the nano-indentation specimens(indentation hardness and modulus)
  • Micro/Nano mechanical properties measurement systems (measurement of Young's modulus for fiber materials)
  • Last Updated:2019/04/18
Articles View Hits
7,713,778

A ccessibility