L37 ae parameters, applications
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This document discusses ultrasonic testing (UT) and acoustic emission (AE). It provides information on UT principles, transducers, transmission methods, instrumentation and data representation. It also discusses phased array ultrasound and time of flight diffraction. For AE, it discusses principles, parameters like amplitude, rise time, duration, MARSE and counts. It then lists various applications of AE testing in sectors like aerospace, alternative energy, automotive, chemicals, infrastructure, manufacturing, materials research and more. It ends with multiple choice questions related to UT and AE topics covered.
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Non-destructive techniques are used in the metal industry and science in order to evaluate the properties of a wide variety of materials without causing damage. Some of the most common non-destructive techniques are electromagnetic, ultrasonic and liquid penetrant testing. One of the conventional electromagnetic methods utilized for the inspection of conductive materials such as copper, aluminum or steel is eddy current non-destructive testing .Electromagnetic methods such as eddy current, magnetic particle or radiographic and ultrasonic methods all introduce electromagnetic or sound waves into the inspected material in order to extract its properties. Penetrant liquid techniques can detect cracks in the test material by using either fluorescent or non-fluorescent dyes.
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the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
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L37 ae parameters, applications
- 1. M.KARTHIKEYAN ASSISTANT PROFESSOR DEPARTMENT OF MECHANICAL ENGINEERING AAA COLLEGE OF ENGINEERING & TECHNOLOGY, SIVAKASI karthikeyan@aaacet.ac.in ME8097 NON DESTRUCTIVE TESTING AND EVALUATION
- 2. UNIT IV ULTRASONIC TESTING (UT) AND ACOUSTIC EMISSION (AE) 1. Ultrasonic Testing-Principle, 2. Transducers, 3. Transmission and pulse-echo method, 4. Straight beam and angle beam, 5. Instrumentation, 6. Data representation, A/Scan, B-scan, C-scan. 7. Phased Array Ultrasound, Time of Flight Diffraction. 8. Acoustic Emission Technique – Principle, 9. AE Parameters, Applications
- 4. Amplitude, A, is the greatest measured voltage in a waveform and is measured in decibels (dB).
- 5. Rise time, R, is the time interval between the first threshold crossing and the signal peak.
- 6. Duration, D, is the time difference between the first and last threshold crossings.
- 7. MARSE, E, sometimes referred to as energy counts, is the measure of the area under the envelope of the rectified linear voltage time signal from the transducer
- 8. Counts, N, refers to the number of pulses emitted by the measurement circuitry if the signal amplitude is greater than the threshold.
- 9. APPLICATIONS
- 10. Aerospace: The aerospace sector can use AET to assess aging aircraft, motors and fuel storage tanks. Alternative energy sources: AET is useful for testing the structural integrity of alternative energy infrastructure such as wind turbines. Automotive: Automotive manufacturers may use AET to assess vehicle components, as well as factory equipment. Chemical and refinery: Companies in the chemical and refinery sector can use AET to test for defects in plant equipment and vessels. Infrastructure: AET is valuable for testing the structural integrity of bridges, tunnels, dams and other types of infrastructure.
- 11. Manufacturing: Manufacturers can use AET to test a wide range of manufacturing equipment types, as well as ensure product quality of certain types of goods. Materials research and development: Those working in materials research and development can use AET to test the integrity of new and existing materials in various applications. Nuclear power: AET can be used to inspect nuclear components, such as lift beams, valves and steam lines. Offshore drilling: AET can provide early detection of faults in offshore drilling platforms and pipelines. Transportation: AET is useful for testing various types of transportation equipment, including railroad tank cars, marine vessels, motors, tube trailers and more.
- 12. Oil and gas: Oil and gas companies can use AET to test pipelines, vessels and processing equipment. Power distribution: AET can be used for partial discharge detection in power transformers. Pressure vessels and piping: Manufacturers of pressure vessels may use AET to ensure product quality. Users of this equipment may also use AET to test the condition of their equipment. Process technology: Process technology professionals in the fields of wastewater treatment, chemical processing, power generation and more can use AET to test the integrity of system components. Pulp and paper: AET is used in the pulp and paper industry for testing the integrity of vessels, tanks, piping, tubing and other equipment used in manufacturing operations.
- 13. Polymer probes are compared to conventional ceramic probes are: a) more noisy b) less noisy MCQ - 1
- 14. Ultrasonic NDT at elevated temperatures is a) only possible when the probe is cooled down to less than 60 �C with water or air b) not possible c) possible with special probes up to 800 �C surface temperature MCQ - 2
- 15. The most efficient sound receiver of the piezoelectric material listed is: 1. lithium sulfate, 2. quartz, 3. barium titanate, 4. silver oxide) MCQ - 3
- 16. The most efficient sound transmitter of the piezoelectric material is: 1. lithium sulfate, 2. quartz, 3. barium titanate, 4. silver oxide MCQ - 4
- 17. Acoustic impedance is a material's: (a) (Density)/(velocity) (b) (Density) × (velocity) (c) Refractive index (d) (Density)/(refractive index) MCQ - 5