Functional Testing

Functional safety is the part of the overall safety of a system or piece of equipment that depends on the system or equipment operating correctly in response to its inputs, including the safe management of unlikely operator errors, hardware failure and environmental changes.

With this important factor to consider, The Atlas Group has made significant investments in protecting the flight management control products provided to our customers. The company has invested in advanced technology to stress products in the inherent environment in which they are compartmentalized. This technology assists in addressing the extremes of intense heat, cold and vibration. We replicate these environments and run functional program testing of these environments to ensure the products function in all conditions for the aircraft.

The Atlas Group understands that the aerospace industry continually pushes the physical boundaries for products and systems, and relies on high quality materials that deliver speed and strength. We strive to surpass customer expectations by maintaining consistently high standards and continuing to provide high performance test solutions for functionality and flexibility.

Types of testing The Atlas Group performs:

Accelerated Stress Screening
The Accelerated Stress Test (AST) chamber will accelerate product failures and fatigue by applying high levels of stress to reveal product defects. The chamber utilizes extreme temperature change rates in excess of 700C per minute and repetitive shock multi-axis vibration with acceleration over 50g’s.Product design and operating limits can be established in just a few hours (rather than years). Atlas Group customers use the AST chamber to improve product reliability, reduce development time and lower production costs and warranty, and field-related failures.

Highly Accelerated Life Test (HALT)
This specialized testing uses step-by-step cycling of environmental variables such as temperature, shock and vibration testing that provides a closer proximity to real-world operating environments. This HALT test is used as part of the product design process using prototypes. HALT will quickly expose product weaknesses which then allows for improved product quality. HALT testing is performed multiple times after the weak components have been fixed, replaced or reinforced.

Highly Accelerated Stress Screen (HASS)
HASS testing applies similar stresses to those used in HALT, however, HASS is an on-going screening test performed on regular production units. This type of testing aims to verify that actual production units continue to operate successfully and quickly detects component or manufacturing irregularities. Environmental variables such as fast temperature cycling, shock and multi-axis vibration as a meansof screening 100% of production units may be used. HASS testing indicates that the entire final product, including all components, will be reliable.

PJS_7695The Atlas Group accomplishes functional tests for the following categories:

  • Leakage
  • Continuity
  • Miss-Wire
  • Customer Software Functional Test
  • Wire Harness Testing
  • Cable Testing
  • PJS_7692Check Opens, Shorts and Miss-Wires
  • Circuit Continuity Testing For Open Circuits
  • Dielectric breakdown (Hipot) Testing
  • Resistor Testing
  • Relay Testing
  • Diode Testing
  • Capacitor Testing
  • Stress Testing
  • PJS_7694Vibration Testing
  • Environmental Testing