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3D printing of an instrumented DMT: design, development and initial testing

Hao Shen (UGent) , Wim Haegeman (UGent) and Herman Peiffer (UGent)
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Abstract
This paper describes the design, fabrication and initial testing of an instrumented Flat Dilatometer Test (iDMT) device. Compared to the DMT test involving pressure readings at two-fixed displacements, this device is designed to have a direct displacement-measuring system and a larger-displacement range to evaluate the continuous pressure-displacement relation of a soil, which may afford an opportunity to improve the interpretation to take non-linear soil behaviors into account rather than using linear elasticity in the DMT analysis. However, technical constraints are encountered in the iDMT blade machining using traditional technologies, alternatively, a 3D printing technology is successfully applied to fabricate the iDMT blade. Then, the calibrations of the iDMT device are performed, followed by an iDMT test in conjunction with a DMT test in a calibration chamber, demonstrating that the new iDMT device can be used to investigate non-linear soil behaviors, and the 3D printing technology is proved not only to be an expedient solution but also to be used as a routine tool in improving geotechnical testing apparatus.
Keywords
DMT, FLAT DILATOMETER, instrumented DMT, 3D printing, pressures, displacement

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Citation

Please use this url to cite or link to this publication:

Chicago
Shen, Hao, Wim Haegeman, and Herman Peiffer. 2016. “3D Printing of an Instrumented DMT: Design, Development and Initial Testing.” Geotechnical Testing Journal 39 (3).
APA
Shen, Hao, Haegeman, W., & Peiffer, H. (2016). 3D printing of an instrumented DMT: design, development and initial testing. GEOTECHNICAL TESTING JOURNAL, 39(3).
Vancouver
1.
Shen H, Haegeman W, Peiffer H. 3D printing of an instrumented DMT: design, development and initial testing. GEOTECHNICAL TESTING JOURNAL. ASTM; 2016;39(3).
MLA
Shen, Hao, Wim Haegeman, and Herman Peiffer. “3D Printing of an Instrumented DMT: Design, Development and Initial Testing.” GEOTECHNICAL TESTING JOURNAL 39.3 (2016): n. pag. Print.
@article{7017689,
  abstract     = {This paper describes the design, fabrication and initial testing of an instrumented Flat Dilatometer Test (iDMT) device. Compared to the DMT test involving pressure readings at two-fixed displacements, this device is designed to have a direct displacement-measuring system and a larger-displacement range to evaluate the continuous pressure-displacement relation of a soil, which may afford an opportunity to improve the interpretation to take non-linear soil behaviors into account rather than using linear elasticity in the DMT analysis. However, technical constraints are encountered in the iDMT blade machining using traditional technologies, alternatively, a 3D printing technology is successfully applied to fabricate the iDMT blade. Then, the calibrations of the iDMT device are performed, followed by an iDMT test in conjunction with a DMT test in a calibration chamber, demonstrating that the new iDMT device can be used to investigate non-linear soil behaviors, and the 3D printing technology is proved not only to be an expedient solution but also to be used as a routine tool in improving geotechnical testing apparatus.},
  author       = {Shen, Hao and Haegeman, Wim and Peiffer, Herman},
  issn         = {0149-6115},
  journal      = {GEOTECHNICAL TESTING JOURNAL},
  keyword      = {DMT,FLAT DILATOMETER,instrumented DMT,3D printing,pressures,displacement},
  language     = {eng},
  number       = {3},
  pages        = {8},
  publisher    = {ASTM},
  title        = {3D printing of an instrumented DMT: design, development and initial testing},
  url          = {http://dx.doi.org/10.1520/GTJ20150149},
  volume       = {39},
  year         = {2016},
}

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