Richard Glen Pettit
Engineers in West Kaysville, UT
License number
Utah 7994660-2202
Issued Date
May 24, 2011
Expiration Date
Mar 31, 2017
Category
Engineer/Land Surveyor
Type
Professional Engineer
Address
Address
West Kaysville, UT
Education
BRIGHAM YOUNG UNIVERSITY, Aug 1, 1985
BRIGHAM YOUNG UNIVERSITY, Apr 1, 1984
Professional information
Fatigue And/Or Crack Growth Test Sample
US Patent:
2013015, Jun 20, 2013
Filed:
Feb 15, 2013
Appl. No.:
13/768980
Inventors:
Richard G. Pettit - Fruit Heights UT, US
Assignee:
FractureLab, LLC - Fruit Heights UT
International Classification:
G01N 3/36
US Classification:
73799
Abstract:
A sample for fatigue and/or crack growth testing, including an axisymmetric or cylindrical gage section with a concentric hole running from a first end, and terminating within the gage section, with one mode of loading introduced at the terminus of the hole, and reacted at the end where the hole originates. A second mode of loading is optionally introduced at a second end of the specimen. Use of the specimen is described in both in the context of an apparatus for fatigue/crack growth testing described in the referenced parent application, as well as with conventional test machines.
Fatigue Crack Growth Test Apparatus
US Patent:
8544338, Oct 1, 2013
Filed:
Feb 21, 2011
Appl. No.:
13/031410
Inventors:
Richard G. Pettit - Fruit Heights UT, US
Assignee:
FractureLab, LLC - Fruit Heights UT
International Classification:
G01N 3/32
US Classification:
73811, 73808
Abstract:
An apparatus for fatigue and/or crack growth testing, including a cyclic loading device and a preferred sample mounted at one end. An embodiment of the device has at least two concentric and coaxial load frames, with guiding interfaces between adjacent load frames to maintain alignment. Solid state actuation systems, which deform in response to the application of energy, are mounted at the end opposite the sample between adjacent load frames to provide up to two modes of actuation, including tension, compression, or torsion. The preferred sample includes a cylindrical gage section with a concentric hole running from a first end, and terminating within the gage section, with one mode of loading introduced at the terminus of the hole, and reacted at the end where the hole originates. A second mode of loading is optionally introduced at a second end of the specimen. Mount hardware for conventional specimens is also presented.