Dr. Jeff Dulaney and Dr. Allen Clauer of LSP Technologies will attend the 3rd International Conference on Laser Peening & Related Phenomena on October 11-14, 2011 in Grand Cube Osaka, Japan. Dr. Dulaney has joined the conference committee.
Dr. Dulaney will present on the topic Future Shock: Accelerating Technology, here is the abstract for his presentation.
It takes an enormous effort to take technology from a laboratory research environment to commercial use. Laser Shock Processing (LSP) of the 1970s evolved into the commercial success known today as laser peening. There are several variants of laser peening in use today, and others yet to be discovered, developed, and integrated into commercial use. The study of the laser-generated shock waves, so critical to laser peening, will find commercial applicability beyond imparting compressive residual stress in metals. Computer models, currently being used to support commercial applications development, will continue to improve and lead the way to new applications and uses. Overlay materials will evolve to enhance the effectiveness of laser peening through the use of special materials and techniques. In situ process controls and diagnostics will continue to be developed to provide real-time feedback for process control and continuous quality assurance as critical parts are being processed. Advancement of laser peening systems will enable new and unexpected applications.
Dr. Clauer will present a paper he co-authored with Peter Gaydos entitled, “The Effect of Surface Treatments on Fatigue of Carburized X2M Steel.” Here is the abstract for his paper.
“Carburized X2M specimens were tested in 3-point bending fatigue after having their surface treated with four different treatments both individually and in combination. The bend specimens were 102 mm x 34 x 8.5 mm, with the longitudinal edges of the tensile surface tapered. The surface treatments were Isotropic Surface Finishing (ISF), Low Stress Grinding (LSG), Shot Peening (SP) and Laser Shock Peening (LSP). The first three were also applied in combination with a follow-up LSP treatment, and also a combined ISF/SP/LSP treatment.
The results show that the fatigue strength increased with the type of surface treatment in the order of ISF, LSG, SP, LSP. The combination treatments produced fatigue strength equivalent to or slightly better than the LSP treatment alone.
These results will be discussed in the context of residual stress profiles and scanning electron microscopy of the surfaces and fracture surfaces. The observed modifications of the surfaces and comprehensive residual stresses lead to observable changes in crack initiation behavior.”
Other committee members from Ohio include:
Ramana V. Grandhi: Wright State University, USA
Kristina Langer: Wright-Patterson AFB, USA
S. R. Mannava: University of Cincinnati, USA
Visit the conference website to learn more.