David Sokol will be presenting at CAMX, The Composites and Advanced Materials Expo, in Orlando, FL on Wednesday, October 15th at 1:30PM in room W221D. He will talk about Laser Bond Inspection and its ability to test the bond strength of adhesively bonded materials.
The Composites and Advanced Materials Expo combines academic research and industry applications. CAMX includes transportation, aerospace, marine, wind energy, software, construction and infrastructure, medical, academics, and sports and leisure. CAMX is the perfect forum for Laser Bond Inspection as it pertains to a majority of these industries. LBI works on any adhesively bonded materials; LBI started with adhesively bonded composite structures. It has progressed and proven successful on metal-to-metal and metal-to-composite structures as well. LSPT is excited to present at CAMX and share our technology with these industries.
For more information about CAMX, visit www.thecamx.org.
LSP Technologies will be at the ASME
Turbo Expo 2012 – Presented by the International Gas Turbine Institute June 11-15, 2012 at the Bella
Center in Copenhagen, Denmark. Dr. Jeff Dulaney, founder, President and CEO of LSPT and David Lahrman, Director of
Business Development will both be at the convention and in our display booth.
Visit the ASME Turbo Expo 2012 web site for more information about the event…http://igti.asme.org/Some information from the web site…The International Gas Turbine Institute (IGTI) of ASME is
dedicated to supporting the international exchange and development of information
to improve the design, application, manufacture, operation and
maintenance, and environmental impact of all types of gas turbines,
turbomachinery and related equipment.Since 1956 IGTI has been an important resource for the gas turbine community,
hosting an annual conference and exposition, Turbo Expo, as well
as providing professional development tools to foster knowledge and
career growth. In addition, IGTI’s 18 technical committees provide
regular ongoing forums for program development and technical exchange,
addressing all areas of technical expertise related to gas turbines.
July 20-21, 2011
Hope Hotel & Conference Center
Wright-Patterson Air Force Base, Dayton, Ohio
LSP Technologies is proud to attend again this year to discuss it’s laser peening process and services as well as it’s laser bond inspection process.
The following is taken from their website:
The Dayton Area Defense Contractors Association (DaytonDefense) will sponsor the fifth “Wright Dialogue with Industry” conference on July 20-21, 2011 at the Hope Hotel and Conference Center, Wright-Patterson AFB, OH.
The purpose of this conference is to help promote economic development activity among local defense contractors and Wright-Patterson Air Force Base. Please plan to attend this year’s Wright Dialogue with Industry to hear first-hand from key leaders of the Air Force Research Laboratory (AFRL) organization as they discuss both current and future business opportunities. There will be opportunities throughout the day for more detailed breakout sessions where you can pose your particular questions to the Laboratory representatives. Throughout the course of the event, there will be time to network and discuss opportunities to do business in greater detail with AFRL.
On November 10, 2009 LSP Technologies successfully demonstrated to the USAF the mobile laser bond inspection system that was constructed on two USAF SBIR (small business innovative research) programs. This advanced pulsed laser inspection system is configured in a self-contained, environmentally-controlled enclosure that sits on a mobile platform. This advancement is essential for rapid insertion of the LBI process into aircraft manufacturing plant operations and aircraft maintenance depots. There exists no equivalent laser system in the commercial sector.
Laser Bond Inspection (LBI) is a local proof-testing method that applies a well-controlled dynamic stress to a composite structure, and senses the failure of weak laminate or weak adhesive bonds in response to the stress. The dynamic stress is generated by the interaction of a pulsed laser beam with a composite structure. The controlled stressing of the composite material has no effect on the material or bond if it is not damaged, defective, or substandard. The technique offers a practical structural health monitoring solution for locating composite damage and defect regions in laminate and laminate-adhesive bonds in aircraft.
Benefits of laser bond inspection include the following:
- Allows the detection of “kissing bonds” in composite structures that are not detectable by standard nondestructive inspection techniques
- Makes calibrated dynamic strength measurements to find weak areas in composite laminate or adhesive bonds that conventional testing cannot locate
- LBI may be applied to metal-to-composite and metal-to-metal bonds as well as pure composite assemblies
- LBI can be applied for inspecting a variety of commercial, reconnaissance, and targeting aircraft
- LBI improves reliability and reduce maintenance cost of composite aircraft structures
As program manager of the project, David W Sokol would like to thank Steve Toller, Jim Niehaus, Brad Lance, Rick Mills, and Kevin Romer for all their hard work on the program. He would also like to thank David Lahrman for working with WPAFB staff in making this USAF SBIR program possible.
Frequently Asked Questions About LBI
What is Laser Bond Inspection?
Laser Bond Inspection (LBI) is a new nondestructive evaluation (NDE) technology for testing the integrity of bonded materials and structures. The technology utilizes an advanced, high energy, pulsed laser system developed by LSP Technologies and specifically tailored for evaluating adhesively-bonded composite structures.
Why not use conventional NDE techniques such as ultrasonic inspection or radiography?
Conventional NDE techniques are useful when a gap, crack, or void is present in a bonded material. However, these techniques cannot identify problems, such as “kissing bonds” where the bonded materials are in contact but without structural strength. These problems can result from surface contamination, improperly mixed or outdated adhesives, or improper adhesive application techniques.
How does Laser Bond Inspection work?
Originally published in NTIAC newsletter: Volume 30, No. 2, June 2005.
Authored by Richard H Bossi, Kevin R Housen, and Craig T Walters
Extensive experimental development, supported by 1-and 2-D hydrodynamic code simulations has demonstrated that the strength of bonds can be tested using calibrated weak shock waves (stress waves) generated at the surface of composite (and other) joints. Previously full-scale roof testing of bonded structure has been the only sure method of detecting “kissing” or weak bonds. Laser bond inspection (LBI), using high-intensity stress waves, has been shown to provide a method for localized testing of bond strength.
Controlled stress waves of sufficient intensity have been shown to be useful for adhesion evaluation. Gupta, et.al. demonstrated that internal bonds could be evaluated with shock waves [3-5]. Recently, high peak power, short burst laser systems have been shown to reliably and repeatedly test the strength of internal bondlines in composite joints of reasonable (6 to 15 mm total thickness) . Modeling of the method has shown that the laser beam shape results in controlled, very localized testing of bond strength. A compact high peak power laser system and team delivery method has been designed for factory implementation. To date, numerous tests on composite to composite bonds have shown the method to be sensitive to weak bonds created by
poor adhesive mixing, improper surface preparation and/or contamination.
To download the entire article- as a pdf: Laser Bond Inspection Device for Composites: Has the Holy Grail Been Found?