Carbon syntactic foam mechanical properties testing

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Description

This project was started early in the redevelopment of the carbon syntactic foam. The new mixture of carbon microballoons with the APO-BMI resin had not been fully characterized, but that was the actual purpose of this effort. During the forming of the billets for these tests, a problem began to surface; but full understanding of the problem did not evolve until samples were cured and tests were conducted. Material compressive strengths varied between 200 and 990 psi where anything below 700 was rejected. The cure cycle was adjusted in an iterative manner in an attempt to maximize the material strength. ... continued below

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Medium: P; Size: 21 p.

Creation Information

McEachen, G. W. January 1998.

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Description

This project was started early in the redevelopment of the carbon syntactic foam. The new mixture of carbon microballoons with the APO-BMI resin had not been fully characterized, but that was the actual purpose of this effort. During the forming of the billets for these tests, a problem began to surface; but full understanding of the problem did not evolve until samples were cured and tests were conducted. Material compressive strengths varied between 200 and 990 psi where anything below 700 was rejected. The cure cycle was adjusted in an iterative manner in an attempt to maximize the material strength. The result of this effort was that the material strength was almost doubled and was achieving strengths of 1,500 psi toward the end of the parts produced. As a consequence, some of the strength tests actually run and reported in the text of this report may not reflect data that would be obtained today. The material strength was continuously being improved over the entire year. A complete series of compression test data is reported, but subsequent tensile and flexural strength tests were not repeated. At a time when it is considered that there are no further changes to be incorporated, a repeat of these tests would be warranted. Some development remains to be done on the carbon microballoon material. Improved carbon material is now available and its effect of the material strength should be evaluated.

Physical Description

Medium: P; Size: 21 p.

Notes

OSTI as DE98051592

Source

  • Other Information: PBD: Jan 1998

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  • Other: DE98051592
  • Report No.: KCP--613-6043
  • Grant Number: AC04-76DP00613
  • DOI: 10.2172/654103 | External Link
  • Office of Scientific & Technical Information Report Number: 654103
  • Archival Resource Key: ark:/67531/metadc710408

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Creation Date

  • January 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • Dec. 11, 2015, 2:40 p.m.

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McEachen, G. W. Carbon syntactic foam mechanical properties testing, report, January 1998; United States. (digital.library.unt.edu/ark:/67531/metadc710408/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.