Non-Destructive Measurement of Residual Strain inConnecting Rods Using Neutrons Honda R&D Company, Limited

Format:

Conference/Event

Author/Creator:

Ikeda, Ikeda, author.

Contributor:

Bunn, Jeffrey

Fancher, Chris

Matsuda, Hideki

Motani, Ryuta

Okayama, Tatsuya

Seid, Alan

Conference Name:

WCX World Congress Experience (2018-04-10 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2018

Summary:

AbstractIncreasing the strength of materials is effective in reducing weight and boosting structural part performance, but there are cases in where the residual strain generated during the process of manufacturing of high-strength materials results in a decline of durability. It is therefore important to understand how the residual strain in a manufactured component changes due to processing conditions. In the case of a connecting rod, because the strain load on the connecting rod rib sections is high, it is necessary to clearly understand the distribution of strain in the ribs. However, because residual strain is generally measured by using X-ray diffractometers or strain gauges, measurements are limited to the surface layer of the parts. Neutron beams, however, have a higher penetration depth than X-rays, allowing for strain measurement in the bulk material. The research discussed within this paper consists of non-destructive residual strain measurements in the interior of connecting rods using the 2nd Generation Neutron Residual Stress Mapping Facility (NRSF2) at Oak Ridge National Laboratory, measuring the Fe (211) diffraction peak position of the ferrite phase. The interior strain distribution of connecting rod, which prepared under different manufacturing processes, was revealed. By the visualization of interior strains, clear understandings of differences in various processing conditions were obtained. In addition, it is known that the peak width, which is also obtained during measurement, is suggestive of the size ofcrystallites in the structure; however the peak width canadditionally be caused by microstresses and material dislocations

Notes:

Vendor supplied data

Publisher Number:

2018-01-1063

Access Restriction:

Restricted for use by site license