53:43
Posted Monday, September 30, 2024
31:48
Dr. Janelle Wharry of Purdue University discusses the use of nanoindentation mapping to understand chloride-induced stress corrosion cracking (SCC) mechanisms in cold spray (CS) coatings used as corrosion mitigation barriers. In addition. Dr. Wharry discusses hardness mapping of grains and along cracks induced by stress corrosion.
Posted Wednesday, August 31, 2022
36:25
Jennifer Hay of KLA Instruments discusses the use of nanoindentation on for 3D printed materials, and provides a demonstration of high-speed mechanical properties mapping using the iMicro nanoindentation system.
Posted Thursday, June 16, 2022
28:41
Professor Yu Zou of the University of Toronto discusses his research in a number of case studies, using nanoindentation techniques to characterize AM-printed materials.
Posted Thursday, June 16, 2022
30:37
Dr. Kurt Johanns of KLA Instruments discusses high strain rate nanoindentation. In English with Chinese subtitles. KLA Instruments 的 Kurt Johanns博士就高应变率纳米压痕技术进行了讨论。 英文演讲，配中文字幕。
Posted Friday, September 17, 2021
01:02:45
The first and most enduring application of nanoindentation is the characterization of hard coatings designed for mechanical and chemical protection of an underlying material. Diamond-like carbon is a common coating of this kind, with typical coating thickness being less than 100nm. This session is a live demonstration of nanoindentation with the KLA iNano, optimized for very shallow nanoinden...
Posted Wednesday, May 13, 2020
01:12:49
Although optical coatings are designed for the control of light (anti-reflective, reflective, splitting, filtering, etc.) it is their mechanical properties which govern longevity. Scratches at any scale lead to excessive absorption of laser energy causing localized thermal stress and ultimate failure. This session is a live demonstration of dynamic nanoindentation with the KLA iMicro nanoindent...
Posted Wednesday, November 27, 2019
52:20
Jennifer Hay unlocks all of the analysis used in dynamic nanoindentation and the continuous stiffness measurement technique. The CSM technique is the greatest advancement in nanoindentation over the last 30 years.
Posted Wednesday, October 9, 2019
56:49
Knowledge of Young’s modulus is essential for the design and control of the extensive fractures required for harvesting natural gas from shale formations. Nanoindentation of drill fragments provides an economical and localized way to measure Young’s modulus of shale. This session is a live demonstration of standardized nanoindentation with the KLA iMicro nanoindenter to characterize shale. Ms. ...
Posted Wednesday, September 11, 2019
01:01:00
In its most basic form, instrumented indentation involves pressing an indenter of known geometry into a test surface while continuously monitoring force and displacement. In this session, we review the test and analysis commonly known as the “Oliver-Pharr” method for measuring hardness and Young’s modulus. The continuous measurement of force and displacement affords two important advantages ove...
Posted Wednesday, June 12, 2019
57:39
The first and most enduring application of nanoindentation is the characterization of hard coatings designed for mechanical and chemical protection of an underlying material. This session is a live demonstration of standardized nanoindentation with the KLA iMicro nanoindenter to characterize an industrial nitride coating on a tungsten- carbide substrate. Ms. Hay demonstrates sample mounting, in...
Posted Tuesday, May 14, 2019
53:30
In 1992, Warren Oliver and George Pharr published an article that revolutionized hardness testing. The genius of Oliver and Pharr was that they devised a way to know the size of a hardness indentation without imaging it. This development disrupted Vickers and Knoop microhardness testing, which required direct measurement of the lengths of the indentation diagonals. Not having to image the inden...
Posted Wednesday, April 10, 2019
