A5043207301- Ultrasonics and Acoustic Wave Propagation
- Mechanical Behavior of Composites
- Thermography and Photoacoustic Techniques
- Fiber-reinforced polymer composites
- Additive Manufacturing and 3D Printing Technologies
- Non-Destructive Testing Techniques
- Smart Materials for Construction
- Electromagnetic wave absorption materials
- Material Properties and Applications
- Carbon Nanotubes in Composites
- Welding Techniques and Residual Stresses
- Advanced machining processes and optimization
- Polymer Nanocomposites and Properties
- Flame retardant materials and properties
- Natural Fiber Reinforced Composites
- Tribology and Wear Analysis
- Cellular and Composite Structures
- Advanced Sensor and Energy Harvesting Materials
- Aluminum Alloys Composites Properties
- Advanced Welding Techniques Analysis
- Additive Manufacturing Materials and Processes
- MXene and MAX Phase Materials
Baylor University
2021-2024
University of Alabama
2018-2019
<title>Abstract</title> This study presents a novel approach to upcycling metallic space debris, growing concern due the increasing quantity of debris in orbit that poses risks satellites and future missions. Additive Friction Stir Deposition (AFSD), solid-state additive manufacturing (SSAM) technique, is proposed for in-space recycling, combining advantages hard-to-weld metals post-processing produce near-net shape components. Simulated composed AA6061, were fabricated into rods using...
Abstract This work investigates the viability of discerning raster pattern additively manufactured components using high frequency ultrasonic nondestructive testing. Test coupons were fabricated from poly cyclohexylenedimethylene terephthalate glycol fused filament fabrication process, in which layers deposited at various predetermined angles. Each printed part was scanned spherically focused, high-resolution, transducers peak frequencies between 7.5 and 15 MHz. From captured waveform data,...
Abstract Ti 3 C 2 – a member of the MXenes (2D transition metal carbides and nitrides) family, is investigated as an effective filler to improve electrical, mechanical, thermal properties divinylbenzene (DVB) thermosetting resin. Consequently, its performance lightning strike protection (LSP) coating for carbon fiber reinforced polymer (CFRP) evaluated. Polyaniline (PANI) dodecylbenzene sulfonic acid (DBSA) complex used cure DVB The synergic effect (with surface that negatively charged) with...
Abstract This work investigates detection and evaluation of barely visible impact damage (BVID) on a carbon fiber reinforced polymer composite using non‐destructive evaluation. Specifically, this paper presents novel method to analyze full waveform from ultrasonic data captured new field portable inspection station. Forty‐eight samples are impacted between 8 16 J representing spectrum surface below the visual threshold damage. The conditioned at cold dry (5°C 10%RH) hot wet (50°C 90%RH)...
This article presents a method of ultrasonic testing (UT) that detects and quantifies interlaminar delaminations in CFRP composites with high resolution terms both spatial the planar dimension depth into laminate. Unidirectional woven laminates were fabricated for this study, PTFE film inserted at various depths throughout laminate to act as intentional crack initiation sites. All samples mechanically tested via three-point, end-notched flexure (ENF) test, followed by quantification extent...
Abstract The use of adhesively bonded joints between composite panels, metal or composites and metals are used in the aerospace automotive industries to avoid stress concentrations due fasteners while reducing weight. Quantifying bond thickness allows for confidence that loading is being properly transferred. This study presents a methodology measure bondline using data obtained from an immersion quality ultrasound scan out‐of‐tank, field‐portable, utlrasonic testing (UT) scanner. Eighteen...
Carbon fiber laminates are susceptible to impact damage due the lack of fibers in direction impact. Often such can be difficult find with visual assessment, prompting need for detection via nondestructive testing techniques. This study quantifies ultrasonically characterized diameters 22 layered CFRP samples from 16 J, 18 20 and 24 J energies. These energies result often defined as barely visible damage. utilizes x-ray computed tomography a baseline verify results ultrasonic testing....
MXene-based Lightning Strike Protection Coating In article number 2100803, Vipin Kumar and co-workers investigate MXene as an effective filler to improve the electrical mechanical properties of divinylbenzene (DVB) thermosetting resin. Its performance a lightning strike protection coating for carbon fiber reinforced polymer (CFRP) is evaluated. MXenes-DVB reduces surface damage from 40.61 cm2 (reference CFRP panel) 13.29 (CFRP coated with 72 g cm−2 weight MXenes-DVB).
Carbon fiber laminates are susceptible to impact damage due the lack of fibers in direction impact. Often such can be difficult find with visual assessment, prompting need for detection via non-destructive testing techniques. This study quantifies diameters 22 layered CFRP coupons barely visible from 16J, 20J, and 24J energies ultrasonic testing. Compression after test measurements were also used ultimate compressive residual strength carbon laminates, further investigating negative...