Chapter 1c : Continuation of Introduction of Non-Destructive Testing / Evaluation

What is the Objective❓

b) To establish reproducibility

c) To establish reliability

a) Design a stipulated standards

The Science and Technology
of NDE involves..

What is the use of NDT in life cycle management❓

What is the interaction between design officers and NDT officers❓

  1. Knowledge of materials and fabrication process
  1. Understand the mechanism of the interaction between the information which generates the device and the same as object
  1. Device that interacts with the test object which generate the information
  1. Tools (hardware & software) to capture and record the result of the inspection
  1. Analyze generated information (its correlation)
  1. Presentation of the result (The one that capture and recorded)
  1. Evaluation of the test object
  1. Decision ( Whether accept, reject or repair)
  1. Communication

Major manufacturing Processes and defect during manufacturing and service (Prasad and Nair, 2008)

What is the factor influencing the reliability of NDE❓

  1. Human Factor
  1. Testing Factor
  1. Test Object
  1. Nature of Defect or Discontinuity
  1. Knowledge Based and Facilities
  1. Risk Factors
  1. 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

  1. Estimation of variation in material homogeneity, dimensions due to corrosion, erosion, irradiation and damage
  1. Ensuring the damage tolerance concept of design
  1. Incorporating the statistical approach in developing acceptance criteria for design stipulated properties
  1. Structure / assembly inspectability using NDT method

Welding

Forming

Casting

Machining

Powder Metallurgy

Surface Protection

Defect: Inclusions, segregations, gas pockets, internal shrinkage and etc

Defect: porosity, cracks, inclusions, variation in density and etc

Defect: dents, scratches, change in thickness of coating and etc

Defect: Lack of fusion, incomplete penetration, cracks and etc

Defect: cracks, scratches, tears, hardness and etc

Defect: pipes, seams, laps, burst, cracks, tears, and etc

Heat treatment

Defect: cracks, segregation, grain size changes