Failure Mode is conducted at ATRONA to aid in determining the root cause of failures. Above photomicrographs are taken at ATRONA at various magnifications using our scanning electron microscopes showing four different types of failure modes.
Generally, failure modes are either ductile or brittle. Ductile failures are typically accompanied by significant plastic deformation. Brittle failures are normally accompanied by no elongation or plastic deformation. They produce catastrophic failures with little to no strain. Ductile fractures are more desirable than brittle fractures because generally ductile fractures give warnings prior to a catastrophic event.
Failure Mode is the manner by which a failure is observed; it generally describes the way the failure occurs. At ATRONA this is conducted through visual analysis, stereoscopic analysis and scanning electron microscopy examination. Brittle failures usually occur with little to no plastic deformation or strain while ductile failures give warnings by the form of elongation, deformation and necking prior to catastrophic failure.
TYPES OF FAILURE MODES
THERE ARE MANY TYPES OF FAILURE MODES INCLUDING: Ductile and Brittle, Dimple Rupture overload, microvoid coalescence, Intergranular and transgranular, Stress Corrosion Cracking, Hydrogen Embrittlement, Gaping Grain Boundaries, Cleavage Rupture, Creep and Elongation, Tensile and Compressive modes, Corrosion (various types), Fatigue (high and low cycles & high and low loads), Lamination and Streaking, Embrittlement, and others.
SEM CAPABILITIES FOR FAILURE MODE TESTING
With our state-of-the-art Scanning Electron Microscopy capabilities these failure modes are easily revealed and identified. Even if the fracture face is corroded, we have ways to clean the fracture surface to reveal the mode of failure. Fracture initiation can also be revealed.
If all you need is failure mode analysis let us know and we can determine the failure mode and report it with evidence in a formal report.
TECHNOLOGY AND FAILURE MODE INVESTIGATIONS:
With our two scanning electron microscope systems we can perform all sorts of failure mode investigations and with our high resolution imaging and software capabilites we can present and intepret the morphology of the fracture in a concise and accurate way.
ATRONA has ways and special techniques and instruments to remove scale, corrosion, and other contamination on fracture faces to reveal the failure mode.
ATRONA Test Labs can also assist your company with Failure Mode and Effects Analysis (FMEA) and Production Part Approval Process (PPAP).