Life Cycle Durability Testing

Life cycle durability testing also known as durability validation testing, enables engineering and quality teams to assess how products withstand repeated use, loads, and environmental stress.

By performing controlled lab cycles, teams can detect fatigue, loosening, cracking, or functional changes early, aiding design validation and supplier comparisons.

This testing often merges environmental exposure with mechanical cycling. Controlled temperature, humidity, and vibration allow teams to quantify product margins and pinpoint where improvements are needed.

Applus Reliable Analysis has supported life cycle and durability testing for more than 20 years. We build test plans that match how components actually fail, then we document the results in a format teams can use for validation and change control.

Why Durability Testing Matters

Durability issues tend to hide until late because they depend on time and accumulated damage. For example…

• A latch may meet initial functional checks but loosen after thousands of closures.
• A housing may pass at room temperature but crack after cold soak and vibration.
• A mount may survive steady loads but fail when resonance amplifies stress.

Life cycle durability testing matters because it reduces program risk before production ramps.

Additionally, it also supports warranty planning, supplier qualification, and engineering decision making with defensible evidence. When you define cycle counts, environments, and pass fail criteria up front, you reduce ambiguity and keep teams aligned around the same acceptance logic.

How Life Cycle Durability Testing Works at Reliable Analysis

Reliable Analysis conducts life cycle durability testing by creating a customised test plan based on client goals like design validation or material comparison. Samples are inspected, measured, and functionally tested to reflect real-world conditions. They are then exposed to mechanical and environmental stresses using specialised equipment, such as environmental chambers and test benches, to simulate fatigue.

Interim inspections monitor trends before failures, and final reports include conditions, cycle counts, and observations to inform engineering decisions.

Test Equipment and Facilities That Support Product Life Cycle Durability Testing

Reliable Analysis chooses equipment based on relevant product stresses and mounting locations. Environmental chambers simulate temperature and humidity cycles, while vibration systems validate durability under continuous or transport-related excitation.

For combined stresses, we design fixtures and chamber setups to ensure consistent exposure during cycling or vibration, helping detect issues that isolated tests may overlook, particularly in assemblies with seals or connectors.

Custom Fixture Design and Fabrication for Durability Cycling

Durability testing only works when fixtures reproduce real constraints. Reliable Analysis provides in house custom fixture building to support simple holding needs and complex multi component cycling setups. We build temperature rated fixtures when tests run in chambers, and we design actuation systems when programs require repeatable motion or force application.

Our fabricators build fixtures that use hydraulic, pneumatic, or motor driven technologies depending on control needs. We treat fixture development as part of the test engineering process so cycle definitions, alignment, and measurement points stay consistent from the first run through the final report.

Industries That Rely on Life Cycle Durability Testing

Industries rely on life cycle durability testing when products must survive repeat use, vibration, and environmental change without losing function or safety margin. Common industries use life cycle durability testing to validate design performance, qualify suppliers, and document durability evidence before release.

Automotive

Automotive teams use life cycle durability testing to validate components that face vibration, thermal cycling, and repeated actuation over long service life. Programs often focus on durability validation, supplier approval, and confirmation of design changes.

Commercial Truck and Bus

Commercial platforms often see higher duty cycles, heavier loads, and longer life expectations. Durability testing supports confidence in structural integrity and long term function under sustained use.

Marine

Marine environments combine vibration, moisture, salt exposure, and temperature change. Durability testing helps teams validate material selection, protective strategies, and long term performance in high corrosion risk conditions.

Military

Defense programs often require evidence that equipment remains functional after rugged handling and harsh environmental exposure. Life cycle durability testing supports qualification and risk reduction for mission critical hardware.

Consumer Products

Consumer products still fail from repeated use, transport vibration, and storage exposure. Durability testing helps reduce returns by validating cycle life and identifying weak points earlier.

Standards and OEM specifications we can support

Life cycle durability testing often ties to a specific standard, an OEM specification, or a customer defined requirement. Reliable Analysis supports testing aligned with common standards used across various industries, including:

• ISO 16750 for environmental conditions and testing of electrical and electronic equipment in road vehicles, including mechanical loads and climatic loads.
• SAE J1455 for recommended environmental practices for electronic equipment design in heavy duty vehicle applications
• GM GMW3172 environmental and durability requirements for electrical and electronic components used in vehicle environments.
• Ford CETP 00.00 E 412 environmental and durability tests for electronic and electrical modules, sensors, and switches.
• VW PV 1200 environmental cycle endurance testing for vehicle parts using temperature and moisture cycling.
• LV 124 test requirements for electrical, electronic, and mechatronic components used in motor vehicles.

If you already have a required standard or OEM specification, we run the program to that requirement and document conditions clearly. If you do not have a defined procedure, we help you build a practical durability plan based on use environment, duty cycle, failure definition, and what constitutes meaningful change for your product. Contact our engineering team to discuss your next testing project.

Reliable Life Cycle Durability Testing Laboratory

Reliable Analysis delivers life cycle durability testing that engineering and quality teams can use with confidence. We focus on repeatable setups, appropriate acceleration, and clear documentation.

If you need life cycle durability testing, accelerated life cycle testing, vibration durability testing with a triaxial shaker, door slam testing, or custom fixture support, Reliable Analysis can help you define the most direct path to defensible results.

Request a quote to start your life cycle durability testing program.

Additional Capabilities

Teams also rely on our additional capabilities to keep durability programs realistic, repeatable, and directly tied to real world constraints. For more life cycle durability testing capabilities follow the links below: