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Advanced NDT Methods for Motorcycle Helmet Safety: Our Key Discoveries

Jul 10, 2024

How Holographic Interferometry and Other Techniques Improve Helmet Integrity Detection


Our R&D in NDT methods of motorcycle helmets has led to significant discoveries in ensuring helmet safety.


Four NDT techniques were explored to correlate physical damages: visual and correlation analysis, various x-ray techniques (fixed & mobile), ultrasonic NDT, and microscopy. However, Holographic Interferometry emerged as the most effective method.


Ultrasonics: While ultrasonic NDT shows promise in structural analysis, challenges arise with thermoplastic helmet shells due to potential material degradation from coupling substances, making it impractical for ‘hairline’ fracture detection.


X-ray: Industrial CT scanning revealed limitations in imaging EPS liners due to metal components causing artifacts, impacting image clarity and geometry extraction.

Microscopy Analysis: Identified potential fractures but lacked correlation with x-ray images, highlighting limitations in current imaging techniques.


To overcome these challenges, The Helmet Doctors advanced their R&D with specialized technologies. Shearography and holographic interferometry now provide precise detection of internal defects, using optical interferometric technology to monitor small displacements and detect defects as small as 10nm.


For more content or illustrations, head to our website, or check out our FAQ. To reference our article to your friends, or family, in the Motorcycling/Motorsport community, click the link below or simply copy this URL or bookmark the page for future referencing: Otherwise read our next article about Helmet Laser Scanning Shines the Green Light Significantly Enhancing Your Safety, titled “Helmet Safety: Vital for Motorcycling”


“Our motorcycle safety course in helmet protection”



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