The Non-Destructive Test of Steel Corrosion in Reinforced Concrete Bridges Using a Micro-Magnetic Sensor

Zhang, Zeyu; Liao, Leng; Zhao, Ruoxi; Yang, Mao; Xia, Runchuan

doi:10.3390/s16091439

Cited by 73 publications

(45 citation statements)

References 17 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this paper, the study of the variation of the SMFL signals on the surface of each group's 2# specimen along the axial position of the specimen under different tensions is also referred to as the axial scanning test of the SBCC specimen [32,41]. In the test process, in order to prevent the outer concrete of the SBCC specimen getting splashed when it is broken, the specimen can be wrapped with a transparent tape.…”

Section: Methodsmentioning

confidence: 99%

“…After the scanning and acquisition of the SMFL signals of all the paths corresponding to the loading displacement of the P1 point completing, the EUTM continues to load and cause tensile to the loading displacement corresponding to the P2 point, and the above scanning and collecting work is repeated until the scanning operation of the loading displacement corresponding to the P10 point ends. In this paper, the study of the variation of the SMFL signals on the surface of each group's 2# specimen along the axial position of the specimen under different tensions is also referred to as the axial scanning test of the SBCC specimen [32,41]. In the test process, in order to prevent the outer concrete of the SBCC specimen getting splashed when it is broken, the specimen can be wrapped with a transparent tape.…”

Section: Methodsmentioning

confidence: 99%

“…It is a passive magnetic measurement method that does not require the use of an artificial magnetic field to excite the material, but instead uses the geomagnetic field as an excitation source. For the detection of defects and damage, it is only necessary to collect the self-magnetic flux leakage (SMFL) signal on the surface of the test piece by magnetic sensors under the combined action of the geomagnetic field and stress [32]. The MMM method is far more sensitive than other non-destructive testing methods in the detection of stress.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A New Method for Internal Force Detection of Steel Bars Covered by Concrete Based on the Metal Magnetic Memory Effect

Pang

Zhou

Zhao

et al. 2019

Metals

Self Cite

View full text Add to dashboard Cite

In this paper, the specimens of steel bars covered by concrete (SBCC) are taken as research objects, and a new method for steel bar internal force detection based on the metal magnetic memory effect is proposed. The variation law of the self-magnetic flux leakage (SMFL) signals on the surfaces of SBCC specimens with loading tension and the variation of the SMFL signals along the axial positions of specimens under different tensile forces are studied. The results show that when the loading tension is about 90% of the yield tension, the tangential component of the SMFL signal has a maximum extreme point. The distribution of the SMFL signals along the axial position shows a smooth curve, where the values at both ends are small while the intermediate values are large. This paper also proposes the use of the "area ratio deviation parameter" to quantitatively calculate the internal forces of the steel bars. This parameter shows a significant linear relationship with the loading tension during the strengthening stage of the specimens. This method can supplement the existing steel bar stress detection methods and has prospective research value. damage detection (destruction, semi-destruction) and non-destructive detection [5,6]. Compared with damage detection, non-destructive detection has the advantages of high precision, small error, and no destruction to the structure, so it is used more now [7]. The traditional non-destructive stress detection methods, such as ultrasonic testing [8,9], eddy current testing [10,11], and X-ray testing [12,13], cannot detect early damage of steel bars [14]. In order to accurately detect the early damage of metal materials by means of non-destructive detection, some effective and new methods based on the physics have come into being [15][16][17]. Metal magnetic memory (MMM) detection technology is one of them [18,19], which was first proposed by Russian scholar Dubov [20]. The basic principle of MMM detection can be summarized as follows: Ferromagnetics indicate that magnetism is a basic property of matter, and that any substance is magnetic. When putting any substance in a magnetic field, under the action of a magnetic field, the substance will be magnetized. The reason why a substance is magnetic is because there is a phenomenon in which electrons rotate and spin around the nucleus, and the magnetic properties of the substance can be quantified by magnetic moments [21,22]. The steel bars in reinforced concrete structures are typical metal materials, and their interior structure can be regarded as being composed of many magnetic domains. The interface between the magnetic domains is called the magnetic domain wall [23]. When subjected to the geomagnetic field, the steel bars are magnetized to excite the magnetic fields around themselves, which form the initial magnetic fields under the action of the geomagnetic field. When the steel bars are subjected to the external tension, under the action of the tensile forces and the geomagnetic field, the magnetic domain structures orient and irre...

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A New Method for Internal Force Detection of Steel Bars Covered by Concrete Based on the Metal Magnetic Memory Effect

Pang

Zhou

Zhao

et al. 2019

Metals

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, in the field of identification of corrosion in the steel components in RC structure, nondestructive test (NDT) is the optimal selection, because the mechanical integrity of RC structure is always required after inspection. For this reason, electromagnetic (EM) methods play important roles in the evaluation of RC structures, and many EM methods, such as ECT [9][10][11], MFL [16,17], GPR [15], have been developed. ECT method uses a coil of conductive wire excited with an alternating electrical current to produce an alternating magnetic field.…”

Section: Introductionmentioning

confidence: 99%

“…Roughly 40% of the engineering structure damages result from the steel corrosion [1]. Many techniques have been developed to detect and evaluate the steel failures [2], such as electrochemical method [3,4], linear ultrasonic testing (UT) [5], acoustic emission (AE) [6][7][8], eddy current testing (ECT) [9][10][11], infrared thermography (IRT) [12][13][14], ground penetrating radar (GPR) [15], magnetic flux leakage (MFL) [16,17], electronic resistance testing (ERT) [18], fiber bragg grating (FBG) [19,20], and X-ray diffraction (XRD) [21]. However, in the field of identification of corrosion in the steel components in RC structure, nondestructive test (NDT) is the optimal selection, because the mechanical integrity of RC structure is always required after inspection.…”

Section: Introductionmentioning

confidence: 99%

The Testing Scheme for Steel Corrosion in the Reinforced Concrete via Near Field Effect of Meter-Band Wave

Zhao¹,

Zhang²,

Zhou³

et al. 2017

PIER Letters

Self Cite

View full text Add to dashboard Cite

Abstract-This paper presents a testing scheme for the steel corrosion in reinforced concrete based on near-field effect of meter wave. The physical mechanism of the near-field method was introduced, and the structure of the measurement device was presented in detail. The electromagnetic field near the steel bar buried in the concrete structure was simulated by the finite difference time domain method. The simulated data show that the mean radiation power decreases monotonously with the increase of the corroded depth of the steel bar, and the corroded area is promising to be imaged directly due to the localization of near field. The results indicate that the near-field technique can act as a new nondestructive testing technique to detect and even image the corrosion area buried in concrete in engineering structure.

show abstract

Simplified Modelling the Demagnetization of H-Bar with Method of Moments

Szewczyk

2019

Advances in Intelligent Systems and Computing

View full text Add to dashboard Cite

The Non-Destructive Test of Steel Corrosion in Reinforced Concrete Bridges Using a Micro-Magnetic Sensor

Cited by 73 publications

References 17 publications

A New Method for Internal Force Detection of Steel Bars Covered by Concrete Based on the Metal Magnetic Memory Effect

A New Method for Internal Force Detection of Steel Bars Covered by Concrete Based on the Metal Magnetic Memory Effect

The Testing Scheme for Steel Corrosion in the Reinforced Concrete via Near Field Effect of Meter-Band Wave

Simplified Modelling the Demagnetization of H-Bar with Method of Moments

Contact Info

Product

Resources

About