Expert Burst Pressure Testing and Leak Testing

A burst pressure test determines the pressure at which a component, vessel, tube, fitting, enclosure, or assembly fails under controlled internal pressure. The test is commonly used to verify design margins, identify weak points, compare prototypes, and support qualification decisions. Results typically include maximum pressure reached, failure mode, deformation observations, and supporting test data.

The burst pressure requirement is usually defined by the product specification, customer standard, regulatory requirement, or engineering safety factor. It may be expressed as a multiple of normal operating pressure or proof pressure. B83 Testing & Engineering helps clients translate those requirements into a controlled test setup, instrumentation plan, and reportable acceptance criteria.

The burst test method generally involves sealing the test article, connecting it to a controlled pressure source, increasing pressure at a defined rate, and monitoring for leakage, deformation, or rupture. Depending on the application, the setup may include hydraulic or pneumatic media, pressure transducers, fixtures, shielding, and data acquisition for documented results.

Leak testing identifies whether a component allows fluid or gas to escape under specified pressure conditions. The appropriate method depends on the component, leakage limit, media, and sensitivity required. Common approaches may include pressure decay, bubble observation, flow measurement, or custom verification methods developed around the product’s geometry and acceptance criteria.

The safest and most useful pressure level is defined before testing based on operating pressure, proof pressure, target burst pressure, standards, and risk considerations. B83 Testing & Engineering reviews the intended use, fixture needs, instrumentation, and expected failure behavior so the test provides meaningful data without unnecessary setup risk.

Burst testing evaluates the ultimate failure pressure of a component, while proof pressure testing verifies that it can withstand a specified pressure without failing or leaking. Proof testing is typically non-destructive when the part passes. Burst testing is usually destructive and is used to establish maximum capacity, design margin, or failure mode.

A typical report may include the test objective, sample identification, setup description, pressure media, instrumentation, pressure profile, maximum pressure, leak observations, failure mode, photographs, and pass/fail results when acceptance criteria are provided. ISO/IEC 17025 accreditation supports disciplined procedures, traceability, and technically reliable documentation.

Yes. Custom fixturing is often essential for accurate pressure and leak testing, especially when parts have unusual ports, flexible materials, nonstandard interfaces, or complex mounting conditions. B83 Testing & Engineering offers custom test development and fixture design capabilities to help replicate intended use conditions and capture dependable performance data.