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Chapter 1c : Continuation of Introduction of Non-Destructive Testing /…
Chapter 1c : Continuation of Introduction of Non-Destructive Testing / Evaluation
What is the Objective
:question:
b) To establish reproducibility
c) To establish reliability
a) Design a stipulated standards
The Science and Technology
of NDE involves..
Knowledge of materials and fabrication process
Understand the mechanism of the interaction between the information which generates the device and the same as object
Device that interacts with the test object which generate the information
Tools (hardware & software) to capture and record the result of the inspection
Analyze generated information (its correlation)
Presentation of the result (The one that capture and recorded)
Evaluation of the test object
Decision ( Whether accept, reject or repair)
Communication
What is the use of NDT in life cycle management
:question:
Generate a defect - property correlation data and specific information related to life extension of components
3, Preparation of specifications/ documents/ test techniques for periodic NDT inspection for health monitoring and to determine the stage of damage in a structure
Estimation of variation in material homogeneity, dimensions due to corrosion, erosion, irradiation and damage
What is the interaction between design officers and NDT officers
:question:
Ensuring the damage tolerance concept of design
Incorporating the statistical approach in developing acceptance criteria for design stipulated properties
Structure / assembly inspectability using NDT method
Major manufacturing Processes and defect during manufacturing and service (Prasad and Nair, 2008)
Welding
Defect: Lack of fusion, incomplete penetration, cracks and etc
Forming
Defect: pipes, seams, laps, burst, cracks, tears, and etc
Casting
Defect: Inclusions, segregations, gas pockets, internal shrinkage and etc
Machining
Defect: cracks, scratches, tears, hardness and etc
Powder Metallurgy
Defect: porosity, cracks, inclusions, variation in density and etc
Surface Protection
Defect: dents, scratches, change in thickness of coating and etc
Heat treatment
Defect: cracks, segregation, grain size changes
What is the factor influencing the reliability of NDE
:question:
Human Factor
Testing Factor
Test Object
Nature of Defect or Discontinuity
Knowledge Based and Facilities
Risk Factors