NDE of additively manufactured components with embedded defects (reference standards) using conventional and advanced ultrasonic methods

Thumbnail Image
Koester, Lucas
Roberts, Ronald
Barnard, Daniel
Chakrapani, Sunil
Singh, Surendra
Hogan, Robert
Bond, Leonard
Major Professor
Committee Member
Journal Title
Journal ISSN
Volume Title
Bond, Leonard
Professor Emeritus
Research Projects
Organizational Units
Organizational Unit
Aerospace Engineering

The Department of Aerospace Engineering seeks to instruct the design, analysis, testing, and operation of vehicles which operate in air, water, or space, including studies of aerodynamics, structure mechanics, propulsion, and the like.

The Department of Aerospace Engineering was organized as the Department of Aeronautical Engineering in 1942. Its name was changed to the Department of Aerospace Engineering in 1961. In 1990, the department absorbed the Department of Engineering Science and Mechanics and became the Department of Aerospace Engineering and Engineering Mechanics. In 2003 the name was changed back to the Department of Aerospace Engineering.

Dates of Existence

Historical Names

  • Department of Aerospace Engineering and Engineering Mechanics (1990-2003)

Related Units

Organizational Unit
Mechanical Engineering
The Department of Mechanical Engineering at Iowa State University is where innovation thrives and the impossible is made possible. This is where your passion for problem-solving and hands-on learning can make a real difference in our world. Whether you’re helping improve the environment, creating safer automobiles, or advancing medical technologies, and athletic performance, the Department of Mechanical Engineering gives you the tools and talent to blaze your own trail to an amazing career.
Journal Issue
Is Version Of
Aerospace EngineeringMechanical EngineeringCenter for Nondestructive Evaluation (CNDE)

Additive manufacturing provides a unique opportunity to embed defects of known size and shape to produce reference samples for inspection and quality control purposes. This paper reports defect detectability studies with cylindrical additively manufactured cobalt-chromium alloy specimens which contain defects of known sizes and distributions. The specimens were characterized using immersion, synthetic aperture focusing (SAFT), phased array, and nonlinear ultrasonic techniques. Results include detectability, signal to noise ratios, and comparison of results between the methods and what is believed to be the first determination of a non-linearity (beta) parameter for an additively manufactured material. The results indicate that additive manufacturing provides a valuable method to produce reference samples, though additional work is required to validate the shape and morphology of the defects specified.


This proceeding may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This proceeding appeared in Koester, Lucas, Ronald A. Roberts, D. J. Barnard, Sunil Chakrapani, Surendra Singh, Robert Hogan, and L. J. Bond. "NDE of additively manufactured components with embedded defects (reference standards) using conventional and advanced ultrasonic methods." In AIP Conference Proceedings 1806, no. 1 (2017): 140006. DOI: 10.1063/1.4974721. Posted with permission.

Mon Jan 01 00:00:00 UTC 2018