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Article
Acoustic Emission Denoising Based on Bio-inspired Antlion Optimization: A Novel Technique for Structural Health Monitoring
Acoustic emission (AE) is a widely used non-destructive testing (NDT) technique for materials and structures, particularly for damage detection and health monitoring of structures. The interference of noise si...
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Article
Acoustic Emission during Press-Brake Bending of SS 304L Sheets and its Correlation with Residual Stress Distribution after Bending
Press-brake bending is one of the important sheet metal forming processes widely used to fabricate different angles and channels in automotive applications. Plastic deformation of material during bending gener...
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Article
High-Temperature Fatigue Crack Growth Study of P91 Steel Using Acoustic Emission
The fatigue crack growth (FCG) behavior of ferritic steel P91 was studied at several temperatures ranging from 300 K to 823 K with simultaneous monitoring of acoustic emission (AE) signals. Compared with FCG, ...
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Article
Analysis of Acoustic Emission Signal to Characterization the Damage Mechanism During Drilling of Al-5%SiC Metal Matrix Composite
Tool wear drives poor surface quality, dimensional error in the workpiece, and unexpected sudden tool failure during the machining process. Thus, detection of tool wear is essential to increase the workpiece q...
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Chapter and Conference Paper
EMAT-Phased Array Inspection of Thick Austenitic Stainless Steel and Dissimilar Metal Welds
Non-destructive testing (NDT) of austenitic stainless steel and dissimilar metal welds is important for inspection of main vessel in prototype fast breeder reactor (PFBR). The strong material anisotropy and co...
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Article
A Study on Temperature Rise, Tool Wear, and Surface Roughness During Drilling of Al–5%SiC Composite
In the present study, passive infrared thermography and embedded K-type thermocouple were employed to investigate the tool and workpiece temperature during drilling of Al–5%SiC composite. The dry drilling expe...
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Article
Fractional Fourier Transform Based Adaptive Filtering Techniques for Acoustic Emission Signal Enhancement
Acoustic emission technique (AET) is a well-known non-destructive testing method used for the detection of crack growth and monitoring structural integrity of components. The main limitation in the application...
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Chapter and Conference Paper
Detection of Multiple Flaws in Steam Generator Tubes of PFBR Using Ultrasonic Guided Waves
An ultrasonic guided wave-based methodology is developed for the detection of multiple flaws in steam generator tubes of the prototype fast breeder reactor. To this end, (L(0,2)) at the frequency of 250 kHz ...
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Article
Fatigue Crack Growth Study in P91 and 316LN Steels Using Acoustic Emission
Fatigue crack growth (FCG) behavior of ferritic steel P91 and austenitic stainless steel 316LN (SS 316LN) has been studied at ambient temperature. Acoustic emission (AE) signals generated during FCG tests were...
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Article
Study on the Influence of Prior Cold Work on Precipitation Behavior of 304HCu Stainless Steel During Isothermal Aging
The precipitation strengthening behavior of 304HCu austenitic stainless steel during isothermal aging at 650 °C is studied under 10 and 20 pct prior cold-worked conditions. The age hardening behavior under the...
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Article
Nondestructive Evaluation for Detection of Voids in Sodium-Bonded Metallic Fuel Pins
Nondestructive detection of sodium-free regions (voids) in metallic fuel pins is necessary for their safe and reliable operation. Eddy current and X-radiography nondestructive evaluation techniques were employ...
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Article
Correlation of Tensile Deformation-Induced Strain in HSLA Steel with Residual Stress Distribution
During service, due to the dynamic loading rates encountered, structural components experience varying levels of plastic deformation which leads to changes in the mechanical behavior of materials. The dynamic ...
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Article
Performance Monitoring of WEDM Using Online Acoustic Emission Technique
This study reveals the machining of Aluminium (Al) based hybrid Metal Matrix Composite (MMC) consists of Silicon Carbide (SiC) and Boron Carbide (B4C) as the reinforcements prepared through stir casting route. Th...
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Article
Design and Development of Signal Conditioning Unit for Acquisition of Acoustic Emission Signal for Metallic Materials
This paper presents the details of design and development of a signal conditioning unit (SCU) for the acquisition of acoustic emission (AE) signals from metallic materials. Acoustic emission is the phenomenon ...
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Article
Map** of Deformation-Induced Magnetic Fields in Carbon Steels Using a GMR Sensor Based Metal Magnetic Memory Technique
Giant magneto-resistive (GMR) sensor based metal magnetic memory (MMM) technique is proposed for map** of deformation-induced self-magnetic leakage fields (SMLFs) in carbon steel. The specimens were subjecte...
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Article
Aging behavior of 17-4 PH stainless steel studied using XRDLPA for separating the influence of precipitation and dislocations on microstrain
The aging behavior of precipitation hardenable 17-4 PH stainless steel is studied by analyzing the changes in microstrain, crystallite size, and dislocation density derived from the modified Williamson–Hall (m...
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Article
Detection of Localized Damage in Water Wall Tubes of Thermal Power Plants Using GMR Sensor Array Based Magnetic Flux Leakage Technique
A flexible giant magneto-resistive (GMR) sensor array based magnetic flux leakage technique has been developed for nondestructive inspection of carbon steel water wall tubes (outer diameter 64.0 mm and wall th...
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Article
Non-destructive evaluation techniques for assessment of creep and fatigue damage in materials and components
In this article, application of various non-destructive evaluation (NDE) techniques for assessment of creep and fatigue damage in materials and components has been discussed. X-ray diffraction technique has be...
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Article
Study of tensile deformation behaviour of M250 grade maraging steel using acoustic emission
Tensile testing of solution annealed and thermally aged (755 K for various durations in the range of 0.25–100 h) specimens of M250 grade maraging steel has been carried out along with acoustic emission (AE) mo...
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Article
Study of ageing-induced α′-martensite formation in cold-worked AISI type 304 stainless steel using an acoustic emission technique
α′-martensite formation during cooling of cold-worked and aged AISI type 304 stainless steel has been studied by an acoustic emission technique. The ageing was carried out at 673 K for 1 h. A substantial amoun...
