View
219
Download
0
Category
Preview:
Citation preview
7/29/2019 AINDTUT2
1/7
1. Module Details
Module name ULTRASONIC TESTINGNominal duration 3 modules
It is anticipated that a learner holding the prescribed entry level
skills will achieve the module purpose in 110 to 120 hours
Module Codes EA613
Discipline Code Non-destructive testing (Code to be allocated)
2. Module Purpose To provide students with knowledge of the principles, proceduresand applications of ultrasonic testing, to develop the competency to
undertake ultrasonic testing of materials in accordance with the
requirements of national and international codes and specifications,and to interpret the results of such tests
3. Prerequisites Nil
4. Relationship to
competency
standards
This module meets the training requirements for Level 2
qualification in ultrasonic testing under AS3998-1992 "Non-
destructive Testing - Qualification and Certification of Personnel -
General Engineering" and AS-3669-1989 "Non-Destructive Testing
- Qualification and Registration of Personnel - Aerospace".
Currently no national competency standards have been established
at national level. However, the learning outcomes in this courserelate to ASF level 5-6.
5. Content Properties and behaviour of ultrasoundFundamental properties - frequency, velocity, wavelength,
amplitude
Continuous and pulsed waves
Modes
Velocity/mode/material relationships
Acoustic impedance, pressure, energy, intensity
Interaction of wavefronts
Inverse square lawDecibel
Behaviour of ultrasound at interfaces
Principles of reflection
Refraction of ultrasound
Mode conversions
Calculation of incident and refracted angles
Critical angles
Mechanisms for detecting defects
Characteristics of ultrasound in materials
Near and far fields
Focussing of ultrasound
Secondary wavesAttenuation
7/29/2019 AINDTUT2
2/7
Generation of ultrasound
Types of transducers
Properties of piezzo electric materials
Energy losses in various media
Determination of near and far fields, divergence and beam spread
Detection of ultrasound
Continuous and pulsed signals
Effect of path length
Time/distance relationships
The flaw detector
Function of pulse generator, transmitter, receiver/ amplifier, time
base, CRT
Function of the various controls
Distance/amplitude effects and correction, AGC, gating, interface
triggering
Types of display
Requirements of codes and standards.
Linearity, effect of suppressionSaturation & amplifier threshold
Digital equipment
Basic test methods
Pulse-echo and transmission methods
Resonance methods
A, B, C, and P scan.
Types of coupling
Single, dual and two-probe methods
Probes
Construction and operation of single and twin crystal normal and
angle probes, both fixed and adjustable.
Focussed transducersCalibration
Types and uses of AS 2083 calibration blocks, and
distance/amplitude and area/amplitude blocks and steel balls for
immersion testing in accordance with appropriate standards
Determination of probe characteristics, measurement of acoustic
velocities
Plotting beam profiles by contact & immersion methods
Variables
Instrument performance
Variations in test materials
Effect of beam incidence
Effect of surface condition and curvature.Resolving power/frequency/damping/energy relativity
Contact and immersion test methods
Setting test sensitivity
Surface preparation
Couplants
Flat and contoured probes
Identification of irrelevant signalsTAFE METAL AND ENGINEERING NATIONAL CURRICULUM PROJECT Page 2 of 8 ACTRAC PRODUCTS
Module: EA613 - Ultrasonic Testing - May, 1998
7/29/2019 AINDTUT2
3/7
Effect of angle of incidence
Surface wave method
Tandem techniques
Water requirements for immersion testing
Interface triggering
Through transmission immersion testing
Instrumental test methods
Automatic recording and computer interfacing
Digital & analog presentations
Computer interfacing and special recording methods
Test applications
Thickness testing
Weld testing
Plate testing
Detection of cracks at rivet holes
Castings, ferrous and non-ferrous
Forgings
Austenitic materialsAssemblies
Bonded materials
Non-metallic materials including plastics, ceramics, and concrete
Rail testing
Flaw size evaluation
Material factors
Rayleigh criterion
DGS curves
6dB and 20dB drop methods
Last significant echo
Tip diffraction
Three dimensional evaluationInterpretation and evaluation
Defect types as related to product
Codes and standards
Recording and reporting
Job records.
Routine reports.
Codes and standards
Written procedures
Presentation
Use of standards
6. Assessment
strategy
Competency based assessment applies. Assessment should be
carried out by gathering evidence using a variety of methods or
instruments that have validity according to the learning being
assessed.
TAFE METAL AND ENGINEERING NATIONAL CURRICULUM PROJECT Page 3 of 8 ACTRAC PRODUCTS
Module: EA613 - Ultrasonic Testing - May, 1998
7/29/2019 AINDTUT2
4/7
Assessment method Multiple choice and short answer questions.Written assignments and demonstrated competence through
assigned tasks.
Final assessment will be by a written examination and practical
examination as required by AS3998 for Level 2 Certification.
Conditions of assessment Assessment will be conducted by suitably qualified assessors, asrequired by AS3998. The candidate will have access to any
equipment, materials and documentation as required for the
assessment.
7. Learning
outcome details
On completion of this module, the learner will be able to
8. Learning outcome
1
Describe the properties and behaviour of ultrasound
Assessment criteria 1.1 Describe the fundamental properties of ultrasound, and todetermine wavelength/velocity/frequency data for specific
situations.
1.2 Describe the different types of waves and how they are
transmitted through materials.
1.3 Describe how ultrasound behaves as it travels through a
medium, and the changes produced when it strikes, or passes
through, an interface and how it interacts with a defect.
1.4 Calculate critical angles and describe the significance of
this property.
1.5 Describe the factors that control the near and far fields in
ultrasonic testing and determine these values for particular
situations.
1.6 Describe the factors that affect attenuation of ultrasonic
energy as it passes through a medium, including the generation of
secondary waves at interfaces, and measure this attenuation.
Learning outcome 2 Describe how ultrasonic waves are generated and detected.
Assessment criteria 2.1 Describe and identify the components in the construction ofa piezo-electric ultrasonic transducer.
2.2 Explain the operation of a piezo electric transducer.
TAFE METAL AND ENGINEERING NATIONAL CURRICULUM PROJECT Page 4 of 8 ACTRAC PRODUCTS
Module: EA613 - Ultrasonic Testing - May, 1998
7/29/2019 AINDTUT2
5/7
Learning outcome 3 Describe the function of the principal modules of different types ofultrasonic flaw detectors.
Assessment criteria 3.1 Describe the function of the various parts and demonstratehow the various controls can be used to calibrate and operate the
equipment for optimum performance.
3.2 Describe the various presentations, including automatic
recording systems, used in ultrasonic testing and demonstrate their
applications and their advantages and limitations.
3.3 Describe the different couplants, including immersion
techniques, used for ultrasonic testing and demonstrate their
advantages and limitations
Learning outcome 4 Calibrate ultrasonic test equipment using standard calibrationblocks, and determine system parameters using standard blocks.
Assessment criteria 4.1 Demonstrate competency in calibrating ultrasonic flawdetection and thickness testing equipment using standard calibration
blocks and in accordance with national standards.
4.2 Demonstrate competency in determining system
parameters, such as beam spread, using standard blocks.
4.3 Demonstrate how changing system variables can affect
system parameters using standard blocks.
Learning outcome 5Demonstrate proficiency in carrying out ultrasonic testing for flaw
detection and thickness testing of various materials in the wrought,
cast and/or welded condition.
Assessment criteria 5.1 Describe the various applications of ultrasonic testing.
5.2 Demonstrate competency in setting up, calibrating and
testing various materials.
5.3 Describe the various methods for sizing of flaws by
ultrasonic methods and demonstrate proficiency in theseprocedures.
5.4 Interpret ultrasonic test results and identify or describe the
types of flaws detected.
5.5 Prepare clear and unambiguous reports on ultrasonic
ins ection of various materials in accordance with the re uirements
TAFE METAL AND ENGINEERING NATIONAL CURRICULUM PROJECT Page 5 of 8 ACTRAC PRODUCTS
Module: EA613 - Ultrasonic Testing - May, 1998
7/29/2019 AINDTUT2
6/7
of national and international codes and standards.
5.6 Prepare procedure instructions for the ultrasonic inspection
of selected materials or components.
7. Delivery of themodule
This module may be taught by active participation, illustration,demonstration and description. This module is practical in nature
and theoretically integrated to complement the acquisition of
practical skills.
Delivery strategy This module will generally be taught and assessed off-the-job.
The module has a high practical content. Theory and practice will
be taught concurrently. There will be a range of learning activities
including modified lectures, practical work and project work.
Resource requirements Human resources
trainer/teacher/mentorPhysical resources
appropriately equipped training room
relevant equipment and information
legislative and regulatory documents
Major texts and references RECOMMENDED TEXT
Ultrasonic Testing for Technicians, J.C. Drury, Unit Inspection
Company, 1983.
Ultrasonic Testing - P.A. Sheedy (In preparation - Published by
Technical Secretarial Service)
PRACTICAL TEXT
Practical Ultrasonics - P.A. Sheedy - Technical Secretarial Service,
PO Box 188, Forestville NSW, 2087
RECOMMENDED TEXT FOR BACKGROUND READING
Ultrasonic Testing, Neasbey & Cheema, NSW TAFECOM
REFERENCES
Non-Destructive Testing Handbook, 2nd Edition, Vol 7. Ultrasonic
Testing. ASNT. 1991
TAFE METAL AND ENGINEERING NATIONAL CURRICULUM PROJECT Page 6 of 8 ACTRAC PRODUCTS
Module: EA613 - Ultrasonic Testing - May, 1998
7/29/2019 AINDTUT2
7/7
Ultrasonic Testing Classroom Training Handbook - ASNT.
Ultrasonic Testing of Materials, J & H. Krautkramer. Springer-
Verlag, 1990.
Ultrasonics, Fundamentals, Technology, Applications, D.
Ensminger. Marcel Dekker Inc. 1988.
Procedures and Recommendations for Ultrasonic Testing of Butt
Welds. Welding Institute, 1989.
STANDARDS
AS 1065 Non-Destructive Testing - Ultrasonic Testing of
Carbon and Low Alloy Steel Forgings.
AS 1710 Non-Destructive Testing - Ultrasonic Testing ofCarbon and Low Alloy Steel Plate - Test Method and Quality
Classification.
AS 1929 Non-Destructive Testing - Glossary of Terms.
AS 2083 Calibration Blocks and Their Methods of Use in
Ultrasonic Testing.
AS 2207 Non-Destructive Testing - Ultrasonic Testing of
Fusion Welded Joints in Ferritic Steel (under review as DR 92178).
AS 2452 Non-Destructive Testing - Determination ofThickness - Use of Ultrasonic Testing.
AS 2574 Non-Destructive Testing - Ultrasonic Testing of
Steel Castings and Classification of Quality.
AS 2824 Non-Destructive Testing - Ultrasonic Methods -
Evaluation and Quality Classification of Metal Bearing Bonds.
Occupational health and
safety requirements
Learners and/or employees undertaking this module should have
demonstrated competencies as defined in the Metal & Engineering
Industry Standards Unit No 1.2F - Apply principles of OH&S in the
work environment. This would apply in the classroom, practical
room or workplace.
TAFE METAL AND ENGINEERING NATIONAL CURRICULUM PROJECT Page 7 of 8 ACTRAC PRODUCTS
Module: EA613 - Ultrasonic Testing - May, 1998
Recommended