DANBLE Triple-function Environmental Test Chamber (Temperature, Humidity, Vibration)

A Triple-function Environmental Test Chamber (also known as a THV Chamber) is an advanced reliability testing system that combines Temperature, Humidity, and Vibration stresses into a single synchronized test profile.

By integrating these three variables, engineers can simulate "real-world" operating environments where mechanical vibration and climatic changes occur simultaneously—such as a vehicle driving through a humid, freezing mountain pass or an aircraft taking off in a tropical storm.

System Architecture

The THV system is unique because it requires the integration of two distinct machines:

1. The Environmental Chamber: A specialized enclosure (often with a removable floor or a "slot") designed to maintain precise temperature and moisture levels.
2. The Vibration Shaker: An electrodynamic or hydraulic shaker system positioned beneath or alongside the chamber.
3. The Interface (Vibration Plate/Seal): A critical "thermal barrier" or flexible diaphragm that allows the shaker’s armature to penetrate the chamber floor while maintaining an airtight, insulated seal.

Key Testing Synergies

Testing these factors together reveals failures that single-stress tests might miss:

• Thermo-Mechanical Fatigue: Rapid temperature changes can make materials brittle, causing them to crack faster under vibration.
• Moisture Ingress: Vibration can loosen seals or gaskets, allowing high humidity to penetrate electronic housings and cause short circuits.
• Connector Fretting: The combined expansion/contraction (Temperature) and microscopic movement (Vibration) can wear down electrical contacts.

Specification Sheet