Technical Brief

Long-Term, High-Throughput Operation of a Controlled Detonation Chamber Based on Shakedown Under Initial Overload in the Plastic Range

[+] Author and Article Information
Joseph K. Asahina

KOBE Steel Ltd.,
2-4, Wakinohama-Kaigandori 2-chome, Chuo-ku,
Kobe 651-8585, Japan

Robert E. Nickell

Applied Science & Technology,
4043 Porte de Palmas, Unit 97,
San Diego, CA 92122-5138

Edward A. Rodriguez

Global Nuclear Network Analysis, LLC,
P.O. Box 580,
Corvallis, OR 97339-0580

Takao Shirakura

Transnuclear Ltd.,
18-16, 1-Chome, Shinbashi, Minato-ku,
Tokyo 105-0004, Japan

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received August 12, 2011; final manuscript received December 23, 2013; published online February 19, 2014. Assoc. Editor: Maher Y. A. Younan.

J. Pressure Vessel Technol 136(3), 034501 (Feb 19, 2014) (6 pages) Paper No: PVT-11-1167; doi: 10.1115/1.4026361 History: Received August 12, 2011; Revised December 23, 2013

Hydrostatic or pneumatic overpressure testing prior to actual service provides a number of purposes related to structural integrity of pressure vessels, including some degree of confirmation of both the design and fabrication processes. For detonation chambers designed to control impulsive pressure loadings, preservice hydrostatic testing at impulses greater than those expected during normal operation can provide an added benefit—the ability to reduce cyclic fatigue damage caused by long-term, high-throughput operation, where the chamber may be use to control hundreds or even thousands of detonations without compromising structural integrity through excessive fatigue crack initiation and growth. This paper illustrates the favorable characteristics of controlled detonation chamber operation following an initial preservice impulsive over-testing program that demonstrates shakedown and satisfaction of strain ratcheting criteria, leading to favorable cyclic fatigue behavior during subsequent long-term, high-throughput operation.

Copyright © 2014 by ASME
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ASME Code Case 2564-2, 2008, “Impulsively Loaded Vessels,” Section VIII, Division 3.
ASME Section VIII, Division 3, 2010, “Alternative Rules for Construction of High-Pressure Vessels,” American Society of Mechanical Engineers, New York. Available at: https://www.asme.org/products/codes-standards/bpvcviii3-2010-bpvc-section-viiirules
Miller, U. R., 2002, “Section VIII Division 1: Rules for Construction of Pressure Vessels,” Companion Guide to the ASME Boiler & Pressure Vessel Code, Vol. 2, K. R.Rao, ed., American Society of Mechanical Engineers, New York, pp. 49–50. [CrossRef]
Shirakura, T., Asahina, J. K., Hayashi, K., and Ouchi, M., 2011, “Dynamic Analysis of Detonation Chamber and Assessment Based on ASME Section VIII, Division 3 and Code Case 2564,” Proceedings of the ASME 2011 Pressure Vessels & Piping Division Conference PVP2011, July 17–21, 2011, Baltimore, MD.
Asahina, J., and Shirakura, T., 2006, “Detonation Chamber of Chemical Munitions–Its Design Philosophy and Operation Record at Kanda, Japan,” Proceedings of PVP2006-ICPVT-11, 2006 ASME Vessel and Piping Division Conference, July, Vancouver, Canada, July 23–27, 2006, pp. 139–147. [CrossRef]


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Fig. 1

Inside view of DA VINCH®

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Fig. 2

Configuration of test

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Fig. 3

75 kg TNT of 25% over load of design condition

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Fig. 4

Installation of 75 kg TNT

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Fig. 5

Strain gage location

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Fig. 6

Dynamic strain of T3L and T7L for Test-1 75 kg TNT

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Fig. 7

Dynamic strain of H1C and B1C at 75 kg TNT

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Fig. 8

Residual strain after each detonation

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Fig. 9

Cumulative residual strain after series of detonation

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Fig. 10

Pictures of deformation of the outer chamber

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Fig. 11

Amount of deformation

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Fig. 15

Change of residual strain

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Fig. 14

Equivalent plastic strain

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Fig. 13

Deformation model

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Fig. 12

Deformation given for the modeling



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