The Triton

Where in the World

Thermal imaging a better solution for inspecting G10 laminates

ADVERTISEMENT

By Charles J. Hazouri

Thermal imaging is the use of special camera-like devices that measure thermal patterns and temperatures across the surface of an object. The image produced can detect changes in materials used and temperatures, which can identify moisture intrusion and heat loss.

The benefit of using thermal imaging is that it is non-contact, two dimensional, real time, and saves cost by reducing time spent troubleshooting a specific anomaly or deficiency.

Infrared thermography is a more informative and non-invasive inspection technique, making it the perfect tool for marine inspections of G10 as well as all fiberglass laminates.

Thermal imaging a better solution for inspecting G10 laminates.

Thermal imaging a better solution for inspecting G10 laminates.

G10 laminate was first introduced in the 1950s and is best described as a thermo-laminated continuous filament woven fiberglass sheet bonded with difunctional or trifunctional epoxy resin. It has great strength, high temperature resistance, good electrical loss and strength, low moisture absorption, is chemical resistant, and is among the most versatile laminates available.

In the marine industry, G10 laminate can be used as backing for carbon fiber sheeting, as structural frames and stiffeners, and as backing plates for various shipboard systems.

To demonstrate the value of thermographic imaging of G10 laminates, a thermal inspection and series of tests were conducted. The initial inspection involved imaging sections of a Hatteras motor yacht. The second test used two sections of G10, one of which was made with a distinctive non-conformity.

The test vessel and samples were offered and supplied by Nathan Goodwin of All Points Boats in Ft. Lauderdale. The inspection and tests were conducted in August and October using a FLIR T440BX thermal imager, which is a camera-like device capable of detecting, displaying and recording thermal patterns across the surface of an object.

The initial inspection proved that imaging of G10 laminates is comparable to imaging solid materials such as structural framing constructed of aluminium and steel. The images show that G10 has well-defined, delineated edges, and appears much darker and is distinctive from regular laminates.

In the next test, two samples were heated and then imaged using thermal infrared technology. Sample A was a standard piece of G10 with no anomalies; Sample B was a piece of G10 with an anomaly consistent with an area of delamination or a small void.

Together, the samples showed that there is a defined pattern to G10 laminates and that any non-conformity can be easily identified with thermographic inspection techniques.

Based on the evidence in these inspections and tests, qualitative and quantitative infrared thermography can clearly identify and document the thermal patterns of G10 laminates when used in the structural capacity of vessel repair and/or construction, or for product failure such as moisture intrusion, delamination, and voids. It is the perfect tool for marine inspections because it has the benefits of being both a more informative process and a non-invasive inspection technique.

Charles J. Hazouri is a certified Level III thermographer, certified marine surveyor, auditor and consultant based in New Orleans. Comments on this essay are welcome at editorial@the-triton.com.

Related Posts...
Imtra, a Massachusetts-based company that manufactures and imports marine products, Read more...
Tecniq’s new compact D30 Surface Mounted Load Light produces 2,000 Read more...
Rhode Island-based KVH Industries unveiled its advanced 60-cm marine satellite Read more...
Registration is open for FarSounder’s technical training class to learn Read more...

Share This Post

Leave a comment

Your email address will not be published. Required fields are marked *

Please answer the question below to leave a comment. * Time limit is exhausted. Please reload CAPTCHA.

Editor’s Picks

FLIBS17: Show tests yacht sale in duty-free FTZ

FLIBS17: Show tests yacht sale in duty-free FTZ

Foreign trade zone offers new options for foreign-flagged yachts By Dorie Cox M/Y Clorinda is able to do what few other …

FLIBS17: New FLIBS dates get rave reviews

FLIBS17: New FLIBS dates get rave reviews

By Dorie Cox Wednesday worked. For as long as most people remember, the Fort Lauderdale International Boat Show has started on Thursday …

USVI Charter Yacht Show previews season, post-hurricane cruising grounds

USVI Charter Yacht Show previews season, post-hurricane cruising grounds

By Carol Bareuther It felt like business as usual at the USVI Charter Yacht Show, hosted by the newly formed Virgin Islands Professional …

Gallery: Triton Networking at Longbow Marine

Gallery: Triton Networking at Longbow Marine

Nearly 300 captains, crew and industry pros joined us last night for Triton Networking at chandlery Longbow Marine in Fort Lauderdale. Low …

Featured Listings