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Ua64/3 Readout, Wku Industrial Education & Technology Apr 1974

Ua64/3 Readout, Wku Industrial Education & Technology

WKU Archives Records

Newsletter includes the following articles:

  • Environmental Science & Technology Building
  • Redrup, Donald. A Philosophy of Industrial Arts - ?
  • Conley, Franklin. A Comment, re: energy crisis
  • Bywaters, Gary. Student vs Faculty Sports
  • Redrup, Donald. Department Possesses EDM Capability
  • Craftsman and Guitar Genuis Speaks, re: Hascal haile
  • Bochan, John. Computer Controlled Machinery at WKU
  • Bywaters, Gary. Western Wins at KIEA
  • Mr. Walter Nalbach Honored.


Spalling Resistance And Fracture Energy Of High-Alumina Refractories /, Daniel R. Larson Jan 1974

Spalling Resistance And Fracture Energy Of High-Alumina Refractories /, Daniel R. Larson

Theses and Dissertations

No abstract provided.


Factors Affecting Ultrasonic Waves Interacting With Fatigue Cracks, Dennis M. Corbly Jan 1974

Factors Affecting Ultrasonic Waves Interacting With Fatigue Cracks, Dennis M. Corbly

Review of Progress in Quantitative Nondestructive Evaluation

I don't mean to be presumptious and imply that we are going to cover all of the many factors which affect ultrasonic measurements of fatigue cracks, as suggested by the title, but we will attempt to go over some recent work we have been doing at the Materials Lab in this area. We'll be talking about fatigue cracks and what variables, both regarding the fatigue crack itself as an entity and the ultrasonic inspection process, have a significant effect on the results, that are obtained.


Energy Distribution Of Photo-Stimulated Electron Emission From Fatigue Specimens, Fred L. Szalkowski Jan 1974

Energy Distribution Of Photo-Stimulated Electron Emission From Fatigue Specimens, Fred L. Szalkowski

Review of Progress in Quantitative Nondestructive Evaluation

I would like to thank Larry Himmel for an excellent introduction into what people call exo-electron emission. We are not going to present too much in the way of results right now either, but we do have a few, and it is more or less going to be an update on what has been going on here in the Science Center as far as the phenomenon of fatigue enhanced photo-emission is concerned.


Adaptive Nonlinear Modeling For Ultrasonic Signal Processing, Anthony N. Mucciardi Jan 1974

Adaptive Nonlinear Modeling For Ultrasonic Signal Processing, Anthony N. Mucciardi

Review of Progress in Quantitative Nondestructive Evaluation

The purpose of this presentation is to introduce to the NDE community an empirical modeling technique which has been under development during the past thirteen years and applied particularly to many problem areas in the last five. The application of interest to today's audience is that of classification of flaw geometry from ultrasonic signals.


Impulse Analysis Of Ultrasonic Indicia, Paul F. Packman Jan 1974

Impulse Analysis Of Ultrasonic Indicia, Paul F. Packman

Review of Progress in Quantitative Nondestructive Evaluation

What I would like to talk about today is essentially a portion of a program that has been sponsored by the AFOSR. The primary objectives of the program are to try and analyze defects associated with fastener holes. These include straight-shank fastener holes, tapered shank fastener holes, and cold-worked holes. The total scope of the program is to try and understand the factors that affect the detection capabilities associated with the fastener hole, both with the fastener in place and with the fastener out (including metallurgical, geometric, and local stresses), and to see if there is some way of characterizing ...


Studies Of Electromagnetic Sound Generation For Nde, Thomas J. Moran Jan 1974

Studies Of Electromagnetic Sound Generation For Nde, Thomas J. Moran

Review of Progress in Quantitative Nondestructive Evaluation

This paper will first provide a brief review of the physics of the electromagnetic generation process in metals and semiconductors and secondly, a discussion of the goals of our present project involving the application of this technique to NDE.


Interface Waves On Interference-Fit Fasteners, David A. Lee Jan 1974

Interface Waves On Interference-Fit Fasteners, David A. Lee

Review of Progress in Quantitative Nondestructive Evaluation

The Aerospace Research Laboratories, like the Rockwell Science Center, are located on top of a hill. Down below the hill are several of the Air Force development laboratories. Just as Mr. Caustin comes up to the Science Center, people come up from the development laboratories and keep us very much in touch with the real world. We occasionally go down and talk to them, too. The interaction between the two places leads to some interesting things. In fact, I'd like to talk to you about one such interaction today.


Laser-Generated Ultrasonic Beams, Michael P. Felix Jan 1974

Laser-Generated Ultrasonic Beams, Michael P. Felix

Review of Progress in Quantitative Nondestructive Evaluation

Now, it is well known that when the radiation from a high-power laser (a Q-switched laser) is focused onto a specimen, very large stresses are generated within the specimen primarily by thermo-elastic means as well as others. Generally, in this focused configuration, damage results. 11 Damage 11 is a bad word in the context of this workshop, so consequently we were concerned with harnessing this potential for lasers to generate large stress waves and thereby produce a stress wave of a more useful nature. In particular, we wanted to generate plane compressive stress pulses and sinusoidal wave trains to be ...


Fracture Control For High Performance Ships And Related Nde Requirements, Hendrikus H. Vanderveldt Jan 1974

Fracture Control For High Performance Ships And Related Nde Requirements, Hendrikus H. Vanderveldt

Review of Progress in Quantitative Nondestructive Evaluation

Members of the Air Force will recognize a lot of what I have to say this morning because the Navy operated in a very cost-effective mode for the taxpayer. We made extensive use of technology originally developed by the Air Force and I would like to acknowledge the contributions of Major J. Frichett and Messrs. H. Wood and N. Tupper. Also, we had contact with NASA, specifically Mr. C. C. Poe, Jr., and we took some information from the B-1 paper that was published a few years ago. Consequently, a number of people in the audience this morning should have ...


Acoustic Emission Study Of Twinning In Indium Crystals And Lead-Tin Alloys, Robert B. Pond Sr Jan 1974

Acoustic Emission Study Of Twinning In Indium Crystals And Lead-Tin Alloys, Robert B. Pond Sr

Review of Progress in Quantitative Nondestructive Evaluation

Dr. Evans' lecture has been an excellent introduction to my presentation. I would like to say, however, that at one time we were asked if we were for or against evaluation by acoustic emission, and we said that we were against it. The reason we were against it was because of a doubt that some of the test procedures were actually telling us anything about cracking. We, therefore, accepted as a chore to try to do what Dr. Evans said should be done, that is, see if we can discriminate between slip, twinning, fracture in acoustic emission signals.


The Effect Of Surface Roughness On The Frequency Of Surface Plasmons, Edgar A. Kraut Jan 1974

The Effect Of Surface Roughness On The Frequency Of Surface Plasmons, Edgar A. Kraut

Review of Progress in Quantitative Nondestructive Evaluation

The theory of photoemission from metals is still in the state of development. There are relatively few rigorous calculations of photoemission spectra from metals. Much of the work which is being done currently is addressed to the question of the role of many-body interactions in this type of problem, and it is, indeed, a theoretical question on ideal metal surfaces of considerable complexity. The introduction of surface roughness requires a model theory, and it requires some model concept. Now, the thing I am going to address myself to in this talk is to the role of surface plasmons in enhancing ...


Nde Prediction Of Adhesive Bond Failure Areas, Tennyson Smith Jan 1974

Nde Prediction Of Adhesive Bond Failure Areas, Tennyson Smith

Review of Progress in Quantitative Nondestructive Evaluation

Suppose you want to find out if an adhesive joint is going to fail before you ever bond it together. Then you can do something about it before the bond is made and that is the kind of information that we are working on here. Consider an assembly line in a factory where you have surface preparations going on, and finally, you get to the point where an adhesive bond is going to be made. It would be very useful if just prior to bonding you had a technique for monitoring the surface to tell you whether the surface is ...


Effects Of Residual Stresses Upon Design, Fabrication And Field Service, Lynn J. Ebert Jan 1974

Effects Of Residual Stresses Upon Design, Fabrication And Field Service, Lynn J. Ebert

Review of Progress in Quantitative Nondestructive Evaluation

I have been asked to discuss with you today the manner in which residual stresses affect the design and fabrication of engineering structures, and their field service. This really reduces to a consideration of what happens to the mechanical properties and characteristics of various materials, and structures made from them, when the residual stresses that they might contain are not relieved.


Physical Origins Of Residual Stress And Present Physical Techniques For Measurement, Paul A. Flinn Jan 1974

Physical Origins Of Residual Stress And Present Physical Techniques For Measurement, Paul A. Flinn

Review of Progress in Quantitative Nondestructive Evaluation

The classic technique for a nondestructive measurement of residual stress is the use of X-ray diffraction. It is really quite an old method. There is a classic paper by Norton and Rosenthal written back in 1943. The method was used during the second World War, I believe, in connection with the study of welded structures in ships. A more or less portable piece of equipment was built even in those days. The method did not come, as far as I know, into very widespread use. I think I now understand this better after hearing yesterday•s talks. It seems clear ...


Microscopic Description Of Bond Strength Mechanisms And Processes, K Lawrence Devries, Ben A. Lloyd Jan 1974

Microscopic Description Of Bond Strength Mechanisms And Processes, K Lawrence Devries, Ben A. Lloyd

Review of Progress in Quantitative Nondestructive Evaluation

What we are going to try doing today is look inside some polymeric materials and see what happens on this scale. We are going to look at rather selected polymeric materials since this is the state of the art as we have developed it at this time. I hope at least that it will give you some insight as to what happens on the inside of materials in general. I think as engineers that we have to be interested in this.