Real-time THz inspection system for TPO roofing membrane welds
A cutting-edge terahertz time-domain spectroscopy (THz TDS) system for non-destructive inspection of weld quality in TPO roofing membranes, aimed at developing a portable, real-time solution for defect detection and quality control.
Overview
This innovative solution leverages terahertz time-domain spectroscopy (THz TDS) to provide non-destructive inspection of weld quality in thermoplastic polyolefin (TPO) roofing membranes. Utilizing a laboratory-based THz system, the technology is designed to detect defects such as poor fusion, voids, and temperature inconsistencies in welds, thereby enhancing quality control and safety standards in roofing applications. The project aims to transition this laboratory capability into a field-deployable solution, equipped with user-friendly software for real-time data visualization and reporting.
Technical specifications
- Technology: Terahertz time-domain spectroscopy (THz TDS)
- Inspection Mode: Reflection mode for capturing time-of-flight data
- Target Material: TPO roofing membranes (45-80 mil thickness)
- Defect Detection: Identifies poor fusion, voids, and hot/cold weld temperatures
- Development Goals: Transition from lab-based system to portable field-deployable unit with software interface
- Applications: Real-time quality control in roofing membrane installations
Technology readiness level
The current technology readiness level is 2, indicating that the basic principles have been observed and reported. Ongoing research and development are focused on validating the system's capabilities and preparing for the development of a prototype suitable for field deployment.
About Commonwealth Scientific and Industrial Research Organisation (CSIRO)
The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is Australia’s national science agency—an applied research organization with a nationwide network of sites and facilities from lab to demonstration scale. Industry partners engage through co‑located labs, pilot plants, test ranges, and marine platforms that enable at‑scale prototyping, field trials, and independent validation, backed by streamlined contracting and dedicated engagement teams. Research is supported by Australian Government appropriations and competitive national grants (e.g., Australian Research Council and National Health and Medical Research Council), alongside industry contracts. A centralized commercialization office manages IP, licensing, and spinout formation, with standard agreements that shorten time to partnership.
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