Developments in micro-and nano-defects detection using bacterial cells

Telmo G. Santos; R. M. Miranda; M. Teresa Vieira; A. Rita Farinha; Telma J. Ferreira; Luisa Quintino; Pedro Santos Vilaca da Silva; Carla C. C. R. de Carvalho

doi:10.1016/j.ndteint.2015.11.002

Developments in micro-and nano-defects detection using bacterial cells

Telmo G. Santos^*, R. M. Miranda, M. Teresa Vieira, A. Rita Farinha, Telma J. Ferreira, Luisa Quintino, Pedro Santos Vilaca da Silva, Carla C. C. R. de Carvalho

^*Corresponding author for this work

Department of Energy and Mechanical Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

4 Citations (Scopus)

Abstract

This paper describes improvements to the Nondestructive Testing (NDT) technique recently proposed, based on the use of bacterial cell suspensions to identify micro-and nano-surface defects. New bacterial strains were used with magnetic fields to improve bacteria mobility. Different materials and defect morphologies were tested, including nanoindentation defects, micro-powder injection moulding components and micro-laser welding. Nanoindentations with 0.6 mu m depth and 5.3 mu m side length were successfully detected. Bacterial cells allow identifying different topographic attributes of the surfaces, such as roughness. Cracks of about 0.5 mu m wide and 10 mu m depth in a reference test block Type 1 were successfully detected. (C) 2015 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	20-28
Number of pages	9
Journal	NDT & E INTERNATIONAL
Volume	78
Issue number	March
DOIs	https://doi.org/10.1016/j.ndteint.2015.11.002
Publication status	Published - Mar 2016
MoE publication type	A1 Journal article-refereed

Keywords

Micro-surface defects
Bacterial cells
Magnetic field
Dye penetrant
STEEL

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10.1016/j.ndteint.2015.11.002

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title = "Developments in micro-and nano-defects detection using bacterial cells",

abstract = "This paper describes improvements to the Nondestructive Testing (NDT) technique recently proposed, based on the use of bacterial cell suspensions to identify micro-and nano-surface defects. New bacterial strains were used with magnetic fields to improve bacteria mobility. Different materials and defect morphologies were tested, including nanoindentation defects, micro-powder injection moulding components and micro-laser welding. Nanoindentations with 0.6 mu m depth and 5.3 mu m side length were successfully detected. Bacterial cells allow identifying different topographic attributes of the surfaces, such as roughness. Cracks of about 0.5 mu m wide and 10 mu m depth in a reference test block Type 1 were successfully detected. (C) 2015 Elsevier Ltd. All rights reserved.",

keywords = "Micro-surface defects, Bacterial cells, Magnetic field, Dye penetrant, STEEL",

author = "Santos, {Telmo G.} and Miranda, {R. M.} and {Teresa Vieira}, M. and {Rita Farinha}, A. and Ferreira, {Telma J.} and Luisa Quintino and {Santos Vilaca da Silva}, Pedro and {de Carvalho}, {Carla C. C. R.}",

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year = "2016",

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doi = "10.1016/j.ndteint.2015.11.002",

language = "English",

volume = "78",

pages = "20--28",

journal = "NDT & E INTERNATIONAL",

issn = "0963-8695",

publisher = "Elsevier",

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T1 - Developments in micro-and nano-defects detection using bacterial cells

AU - Santos, Telmo G.

AU - Miranda, R. M.

AU - Teresa Vieira, M.

AU - Rita Farinha, A.

AU - Ferreira, Telma J.

AU - Quintino, Luisa

AU - Santos Vilaca da Silva, Pedro

AU - de Carvalho, Carla C. C. R.

N1 - VK: T20309

PY - 2016/3

Y1 - 2016/3

N2 - This paper describes improvements to the Nondestructive Testing (NDT) technique recently proposed, based on the use of bacterial cell suspensions to identify micro-and nano-surface defects. New bacterial strains were used with magnetic fields to improve bacteria mobility. Different materials and defect morphologies were tested, including nanoindentation defects, micro-powder injection moulding components and micro-laser welding. Nanoindentations with 0.6 mu m depth and 5.3 mu m side length were successfully detected. Bacterial cells allow identifying different topographic attributes of the surfaces, such as roughness. Cracks of about 0.5 mu m wide and 10 mu m depth in a reference test block Type 1 were successfully detected. (C) 2015 Elsevier Ltd. All rights reserved.

AB - This paper describes improvements to the Nondestructive Testing (NDT) technique recently proposed, based on the use of bacterial cell suspensions to identify micro-and nano-surface defects. New bacterial strains were used with magnetic fields to improve bacteria mobility. Different materials and defect morphologies were tested, including nanoindentation defects, micro-powder injection moulding components and micro-laser welding. Nanoindentations with 0.6 mu m depth and 5.3 mu m side length were successfully detected. Bacterial cells allow identifying different topographic attributes of the surfaces, such as roughness. Cracks of about 0.5 mu m wide and 10 mu m depth in a reference test block Type 1 were successfully detected. (C) 2015 Elsevier Ltd. All rights reserved.

KW - Micro-surface defects

KW - Bacterial cells

KW - Magnetic field

KW - Dye penetrant

KW - STEEL

UR - http://www.sciencedirect.com/science/article/pii/S0963869515001164

U2 - 10.1016/j.ndteint.2015.11.002

DO - 10.1016/j.ndteint.2015.11.002

M3 - Article

SN - 0963-8695

VL - 78

SP - 20

EP - 28

JO - NDT & E INTERNATIONAL

JF - NDT & E INTERNATIONAL

IS - March

ER -

Developments in micro-and nano-defects detection using bacterial cells

Abstract

Keywords

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