Structural health monitoring of irradiated high-density polyethylene samples with electrical resistance tomography

Rastogi, Shreya; Bartolo, David; Gurses, Sadi; Kronawitter, Coleman X.; Saponara, Valeria La

doi:10.1007/s10853-021-06398-9

Cited by 8 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The principle of action is Figure 2, as shown in (b), when the piezoelectric sensitive material is subjected to an external force in a certain direction, A phenomenon of polarization occurs, which produces an opposite charge on the two surfaces, as shown in (a), when the external force disappears, the polarization also disappears. Sensors based on the piezoelectric impedance method have the advantages of high sensitivity, simple equipment, and small working position [9] P2 P3 Giurgiutiu et al [10] have found that the relevant admittance band of piezoelectric crystal sensors and the mechanical characteristics of the structure connected to them have a certain correlation. Jozue et al [11] compare the time domain-based piezoelectric impedance structure damage monitoring method with the frequency domain-based response function method, which proves that the time-domain-based monitoring method is more sensitive than the frequency-domain-based monitoring method.…”

Section: Analysis Of the Current Situation Of Research On Structural ...mentioning

confidence: 99%

Exploration of structural health monitoring technology of propellants for solid rocket motor

Men¹,

Li²,

Gao³

2022

International Conference on Advanced Sensing and Smart Manufacturing (ASSM 2022)

View full text Add to dashboard Cite

Solid rocket motor propellant in the long-term storage process of the drug column structure damage has the characteristics of strong concealment, great harm, and difficulty to detect. At present, for the structural health monitoring technology of solid rocket motor propellant, a large number of studies have been carried out abroad, and related research has been carried out in China. In this paper, the relevant concepts and connotations of solid rocket motor propellant structural health monitoring technology are sorted out, the performance of the main methods of current solid rocket motor propellant health monitoring technology is compared, and the research status of emerging structural health monitoring technologies such as piezoelectric impedance method, fiber grating method and infrared thermal imaging method is analyzed. In this paper, based on the current research status, the possible development direction of future research is explored and prospected.

show abstract

Section: Analysis Of the Current Situation Of Research On Structural ...mentioning

confidence: 99%

Exploration of structural health monitoring technology of propellants for solid rocket motor

Men¹,

Li²,

Gao³

2022

International Conference on Advanced Sensing and Smart Manufacturing (ASSM 2022)

View full text Add to dashboard Cite

show abstract

“…[1,2] Compared with their metallic counterparts, glass fibers are the most popular reinforcements in these applications due to their desirable advantages, such as designability and high specific strength and stiffness. [3][4][5] However, defects can be inevitably introduced into these composite structures in manufacturing, and their progress further causes damage. [6] The growth of such damages can adversely affect the global mechanical performance of the finished parts during their service life.…”

Section: Introductionmentioning

confidence: 99%

In‐situ monitoring of glass fiber/epoxy composites by the embedded multi‐walled carbon nanotube coated glass fiber sensor: From fabrication to application

Wan

Yang

et al. 2022

Polymer Composites

View full text Add to dashboard Cite

Monitoring the curing defects as well as damages that occur in the fabrication and application process is important for ensuring the safety of composite structures. In this paper, a highly sensitive 1-D line sensor is designed to achieve self-sensing and diagnosing functionalities in both the fabrication and application of glass fiber reinforced epoxy (GF/epoxy) composites. The sensor consists of multi-walled carbon nanotube coated glass fiber (MWCNT@GF), which is sensing the damage by the principle of resistance change. Due to the vacuumassisted resin infusion process, the MWCNT@GF sensor is embedded into GF/epoxy composite laminates, and hence, it can monitor the resin frontal flow, curing, and especially the flow defects. In the subsequent application, the tensile performance of a GF/epoxy composite joint is evaluated by not only the force-displacement curve but also the displacement-dependent resistance change of the sensor. Tensile damage modes are distinguished, which is for the first time to be reported. The MWCNT@GF sensor is mechanically stable and highly sensitive; hence, it can be used to follow the composite performance from fabrication until the end of life.

show abstract

“…Intrinsically self-sensing composites incorporate conductive nanofillers in the polymer matrix. For such materials, EIT has been used for detecting throughholes, 31 impact damage, 32 matrix cracking, 33 delaminations, 34 and UV radiation damage 35,36 in composites incorporating carbon nanotubes (CNTs), 33 carbon nanofibers (CNFs), [37][38][39][40] and carbon black (CB). 31 Although most research has focused on thin plates, there has been some work in using EIT for damage detection in non-planar structures as well.…”

Section: Introductionmentioning

confidence: 99%

Precise damage shaping in self-sensing composites using electrical impedance tomography and genetic algorithms

Hassan

Tallman

2022

Structural Health Monitoring

View full text Add to dashboard Cite

Fiber-reinforced composites with nanofiller-modified polymer matrices have immense potential to improve the safety of high-risk engineering structures. These materials are intrinsically self-sensing because their electrical conductivity is affected by deformations and damage. This property, known as piezoresistivity, has been extensively leveraged for conductivity-based damage detection via electrical resistance change methods and tomographic imaging techniques such as electrical impedance tomography (EIT). Although these techniques are very effective at detecting the presence of damage, they suffer from an inability to provide precise information about damage shape, size, or mechanism. This is particularly detrimental for laminated composites which can suffer from complex failure modes, such as delaminations, that are difficult to detect. To that end, we herein propose a new technique for precisely determining damage shape and size in self-sensing composites. Our technique makes use of a genetic algorithm (GA) integrated with realistic physics-based damage models to recover precise damage shape from conductivity changes imaged via EIT. We experimentally validate this technique on carbon nanofiber (CNF)-modified glass fiber-reinforced polymer (GFRP) laminates by considering two specific damage mechanisms: through-holes (as a function of number, size, and location) and impact-induced delaminations (as a function of impact energy). Our results show that this novel technique can accurately reconstruct multiple through-holes with radii as small as 1.19 mm and delaminations caused by low velocity impacts. The reconstructed delamination shapes and sizes were shown to be in much better agreement with the actual delaminations observed using optical microscopy than is achievable by traditional EIT alone. These findings illustrate that coupling piezoresistivity with conductivity-based spatial imaging techniques and physics-based inversion strategies can enable damage shaping capabilities in self-sensing composite structures.

show abstract

Structural health monitoring of irradiated high-density polyethylene samples with electrical resistance tomography

Cited by 8 publications

References 40 publications

Exploration of structural health monitoring technology of propellants for solid rocket motor

Exploration of structural health monitoring technology of propellants for solid rocket motor

In‐situ monitoring of glass fiber/epoxy composites by the embedded multi‐walled carbon nanotube coated glass fiber sensor: From fabrication to application

Precise damage shaping in self-sensing composites using electrical impedance tomography and genetic algorithms

Contact Info

Product

Resources

About