GB/T 24648.2-2009Reliability assessment of engineering and agricultural machine - Evaluation parameter system and failure classification code (English PDF)

2.1

Machinery for agriculture and agricultural engineering job field operations.

Such as for agricultural field work products are tractors, harvesters and other; for agricultural engineering jobs are agricultural loaders, agricultural Mining

Machines.

2.2

The deterioration of the product or its components can not perform its required function or performance indicators to all phenomena exceeds a predetermined range.

2.3

Under the conditions of use prescribed, because of their inherent product defects caused by the fault.

Parts such as excessive deformation, fracture, early wear and fatigue, abnormal corrosion and aging, loose fasteners or failure or performance degradation over

Limit and the "three leakage" and so on.

2.4

By some parts of the defective product directly or indirectly caused by a defective product to other parts, or because of the nature of the fault resulted pie

A fault.

Because such as engine connecting rod bolt fracture connecting rods, bearings, piston and cylinder damage caused by a series of parts, the connecting rod bolt fracture

Intrinsically fault; other parts of the damage caused thereby are called subordinate fault.

2.5

Operator fails to the instructions for use and failures caused by operation.

For example, the operator fails to specification requirements or refuel with water, which led to engine overheating, hold cylinder; operator without changing parts Junction

Configuration or adjustment of status, resulting in overload use damaged parts.

3.1

Products by Category failure modes are.

a) product performance degradation;

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