Scott Webster |
interesting, well organized presentation of material
Phillip Loya |
Good overview and topics for basic/fundamental understanding.
Robert Becker |
Decent basic knowledge. I didn't need the full test descriptions, just the basics of how it was used and how to interpret the results.
Brian Thomas |
Good course. Nice summary of topic.
Dennis Potts |
Well organized material. Visuals could use some work.
Andrew Smyth |
Decent introduction to cracks and how they are analyzed.
Kevin Macfarlan |
Lots of typos and unclear language. For example, what does this mean, "The ASTM E399 standard specifies that the length of the initial crack length needs to be the same as the width of the specimen, and about 0.45 - 0.55 of the width of the specimen"? Also, I'm not sure he he using the word "accuracy" correctly. For example, he might say an equation has an accuracy of 5%. Doesn't he really mean 95%?
Andrew Gates |
Decent and practical overview of crack propagation. There is enough information here for me to use as a "jump off" point for analyzing the propensity for crack growth in a given application.
Shane Chalupa |
Very good introduction to the topic.
Scot Keller |
Good explanations and clear practical examples.
Ben Bersanti |
Course provided general overview information regarding the application of crack propogation principles without being overly complicated for the general audience. Given that the course was intended to cover the basics of fracture mechanics, material density was appropriate for the audience.
Dane Donaldson |
Question 10 has something wrong with it?
Otherwise an educational course. WEBMASTER NOTE: We have contacted the SME and they have provided the following comment: In a blanking process, minute mis-alignments (that are exacerbated in time due to wear), are causing the punch and the die do not touch the blank at the same time and with the same force throughout its perimeter. Therefore, the blank is penetrated initially in two points only (one on the punch side and one on the die side), initiating a surface crack that advances as the die advances, in a KIII mode.
Jeffrey Birt |
Good, solid material. Lots of theory. Well-written (a few errors, a couple of confusing spots). Diagrams may not have all translated well into the pdf?