The researcher behind this toolkit and the motivation for building it
The Ultrasound & NDT Toolkit is an open, browser-based educational and practical reference for ultrasonic nondestructive evaluation. It was built to bridge the gap between dense textbook theory and day-to-day lab practice — giving students and practitioners quick access to interactive calculators, visual theory explanations, and curated resources, all in one place.
Every calculator and diagram on this site reflects real inspection scenarios encountered in the Purdue NDT Research Lab — from setting water paths for immersion transducers to sizing cracks with TOFD and calibrating phased array setups. The goal is a living reference that grows alongside active research.
All content is freely available. If you use this toolkit in your research or teaching, a mention or link back is appreciated but not required.
My doctoral research sits at the intersection of advanced ultrasonic sensing and data-driven signal analysis, with applications to aerospace and infrastructure inspection.
Delay-law optimisation, S-scan reconstruction, and FMC/TFM imaging for complex geometry inspection.
Detection of delaminations, impact damage, and manufacturing voids in CFRP and GFRP structures.
Hilbert transforms, time-gain compensation, pulse compression, and machine-learning assisted flaw classification.
Beam profiling, near-field mapping, impedance analysis, and wideband calibration methods.
The toolkit currently includes the following modules:
Calculators include: Wavelength, Water Path, Near-Field Distance, TOF Depth, Attenuation, Snell's Law, Acoustic Impedance, Beam Divergence, Wave Velocity from Material Properties, and TOFD Crack Sizing.
The toolkit is intentionally dependency-free — pure HTML, CSS, and JavaScript so it runs entirely in a browser with no build step and no server required.
For providing the research environment, equipment, and collaborative expertise that grounds every calculation and diagram on this site.
The NDT Resource Center at nde-ed.org served as a primary reference for theory content, inspection techniques, and practical applications. Freely available to the NDT community.
Manufacturer application notes and transducer datasheets were referenced to ensure technical accuracy in the transducer specifications and frequency guidance.
American Society for Nondestructive Testing standards and educational materials informed the calibration, DAC, and inspection procedure content.
Questions, corrections, or suggestions for new calculators and content are welcome. Reach out by email or open an issue on GitHub — contributions and feedback help make this a better resource for everyone in the NDT community.