Environmental conditioning mechanical test system

A system to correct for thermomechanical drift in a mechanical testing assembly, comprising:

• a system frame, wherein the system frame is subject to thermomechanical drift;
• a sample stage coupled with the system frame;
• a mechanical testing instrument coupled with the system frame, the mechanical testing instrument includes a movable probe configured to engage with a sample and displace a depth relative to the sample with a load;
• a laser interferometer system coupled with the mechanical testing instrument, the laser interferometer system includes:
• a first interferometer coupled between the probe and a remainder of the mechanical testing instrument, the first interferometer is configured to determine a probe displacement of the probe relative to the remainder of the mechanical testing instrument;
• a second interferometer coupled between the mechanical testing instrument and the system frame, the second interferometer is configured to determine a sample displacement of the sample stage or the sample relative to the mechanical testing instrument;
• and
• an isolation and measurement module configured to:
• determine a difference between the probe displacement and the sample displacement;
• isolate the mechanical testing instrument from the thermomechanical drift of the system frame using the determined difference between the probe displacement and the sample displacement.

A system to correct for thermomechanical drift in a mechanical testing assembly, comprising:

• a system frame, wherein the system frame is subject to thermomechanical drift;
• a sample stage coupled with the system frame;
• a mechanical testing instrument coupled with the system frame, the mechanical testing instrument includes a movable probe configured to engage with a sample and displace a depth relative to the sample with a load;
• and
• a non-contact sensor configured to measure a displacement of the probe relative to the system frame and to measure a displacement of the sample relative to the system frame.