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Failure analysis

Product quality is the foundation of an enterprise. CTI provides customized failure analysis solutions，To help enterprises reduce and prevent the recurrence of failure of similar mechanical parts, ensure product quality, improve product competitiveness, provide information for enterprise technology development, technical transformation, increase the technical content of enterprise products, so as to obtain greater economic benefits.

? Service background

1、Determine failure mode；

2、Define failure defect；

3、Identify failure mechanism；

4、Determine failure cause；

5、Put forward countermeasure.

? Service Content

1、Main failure type

Fracture failure	Cleavage fracture failure,dimple fracture failure,quasi cleavage fracture failure,fatigue fracture failure,creep fracture failure,stress corrosion fracture failure,intergranular fracture failure,liquid or solid metal brittle fracture failure,hydrogen embrittlement fracture failure,slip separation failure,etc.
Deformation failure	Elastic deformation failure and plastic deformation failure.
Wear failure	Adhesion wear failure、abrasive wear failure、corrosion wear failure、deformation wear failure、surface fatigue wear failure、impact wear failure、micro vibration wear failure,etc.
Corrosion failure	Direct chemical、electrochemical corrosion failure、point corrosion failure、local corrosion failure、intergranular corrosion failure、selective corrosion failure、crevice corrosion failure、wear corrosion failure、hydrogen damage failure、stress corrosion failure,etc.

2、Product scope

Metal materials and parts、fastening bolts、shaft parts、gears、spiral springs、plate springs、connecting rods,etc.

3、Failure analysis test method

Chemical analysis	OES、ICP-OES、EDS、XRF、carbon sulfur analyzer 、Oxygen nitrogen hydrogen analyzer、XRD
Mechanical properties test	Tensile test、Impact test 、Bend test 、flattening/flaring/flange test、shear test、compression test
Hardness test	Brinell Hardness、Rockwell Hardness、Vickers Hardness、Micro Vickers Hardness、Knoop hardness
Metallographic analysis	micro-structure 、grain size、the nonmetallic inclusion、coating thickness、macro test
Fracture analysis	Stereo-microscope analysis、SEM analysis
異物分析	SEM-EDS
Corrosion testing	NSS、AASS、CASS、cyclic salt spray test、intergranular corrosion、Dezincification resistance of copper alloys
Non-destructive test	UT、MT、PT、ET、RT