Dr. Mohammad Faisal Haider Profile

Dr. Mohammad Faisal Haider

at Stanford Univ

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Publications (6)

Proceedings Article | 1 April 2019 Presentation + Paper

An improved analytical method to overcome convergence issues in composites guided wave prediction

Mohammad Faisal Haider, Vicotr Giurgiutiu

Proceedings Volume 10972, 109720L (2019) https://doi.org/10.1117/12.2515329

KEYWORDS: Composites, Waveguides, Testing and analysis, Wave propagation, Aluminum, Structural health monitoring, Phase velocity, Wave plates

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Proceedings Article | 1 April 2019 Presentation + Paper

Eddy current non-destructive evaluation of manufacturing flaws and operational damage in CFRP composites

Robin James, Mohammad Faisal Haider, Victor Giurgiutiu, David Lilienthal

Proceedings Volume 10971, 109711N (2019) https://doi.org/10.1117/12.2515505

KEYWORDS: Composites, Manufacturing, Polymers, Ultrasonics, Nondestructive evaluation, Inspection, Resistance, Carbon, Finite element methods

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Proceedings Article | 1 April 2019 Presentation + Paper

An experimental evaluation of Helmholtz potentials as a source of acoustic emission due to fatigue crack

Mohammad Faisal Haider, Roshan Joseph, Victor Giurgiutiu

Proceedings Volume 10971, 1097115 (2019) https://doi.org/10.1117/12.2515330

KEYWORDS: Acoustic emission, Signal detection, Algorithm development, Wave propagation, Waveguides, Acoustics, Sensors, Signal processing, Wave plates

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Proceedings Article | 27 March 2018 Paper

Piezoelectric wafer active sensors under gamma radiation exposure toward applications for structural health monitoring of nuclear dry cask storage systems

Mohammad Faisal Haider, Hanfei Mei, Bin Lin, Lingyu Yu, Victor Giurgiutiu, Poh-Sang Lam, Christopher Verst

Proceedings Volume 10599, 105992F (2018) https://doi.org/10.1117/12.2297390

KEYWORDS: Transducers, Gamma radiation, Ferroelectric materials, Structural health monitoring, Capacitance, Semiconducting wafers, Active sensors, Crystals, Sensors, Radiation effects

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Proceedings Article | 27 March 2018 Presentation + Paper

Guided wave crack detection and size estimation in stiffened structures

Md Yeasin Bhuiyan, Mohammad Faisal Haider, Banibrata Poddar, Victor Giurgiutiu

Proceedings Volume 10599, 105991Y (2018) https://doi.org/10.1117/12.2309975

KEYWORDS: Waveguides, Ultrasonics, Defect inspection, Inspection, Nondestructive evaluation, Structural health monitoring, Wave plates, Corrosion, Structural engineering, Defect detection

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Proceedings Article | 19 April 2017 Presentation + Paper

Sensing capabilities of piezoelectric wafer active sensors in extreme nuclear environment

Mohammad Faisal Haider, Bin Lin, Lingyu Yu, Victor Giurgiutiu

Proceedings Volume 10169, 101691Z (2017) https://doi.org/10.1117/12.2260162

KEYWORDS: Transducers, Capacitance, Radiation effects, Structural health monitoring, Gamma radiation, Sensors, Semiconducting wafers, Active sensors, Ferroelectric materials, Active remote sensing, Environmental sensing, Crystals

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There is considerable demand for structural health monitoring (SHM) at locations where there are substantial radiation fields such as nuclear reactor components, dry cask storage canister, irradiated fuel assemblies, etc. Piezoelectric wafer active sensors (PWAS) have been emerged as one of the major SHM sensing technologies. In order to use PWAS to perform SHM in nuclear environment, radiation influence on sensor and sensing capability needs to be investigated to assure the reliability of the PWAS based method. Radiation may cause degradation or even complete failure of sensors. Gamma radiation is one of the major radiation sources near the nuclear source. Therefore, experimental investigation was completed on the gamma radiation endurance of piezoelectric sensors. The irradiation test was done in a Co-60 Gamma Irradiator. Lead Zirconate Titanate (PZT) and Gallium Orthophosphate (GaPO4) PWAS were exposed under gamma radiation at 100 Gy/hr rate for 20 hours. Electro-mechanical (E/M) admittance signatures and electrical capacitance were measured to evaluate the PWAS performance before and after every 4 hours exposure to gamma radiation. PWAS were kept at room temperature for 6 days after each 4 hours radiation exposure to investigate the effect of time on PWAS by gamma radiation. It was found that, PZT-PWAS show variation in resonance frequency for both in plane and thickness mode E/M admittance. Where, the changes in resonance amplitudes are larger for PZT-PWAS. GaPO4-PWAS E/M impedance/admittance spectra don’t show any reasonable change after gamma irradiation. A degradation behavior of electrical properties in the PZT-PWAS was observed. Capacitance value of PZT-PWAS decreases from 3.2 nF to 3.07 nF after exposing to gamma radiation for 20 hours at 100Gy/hour. This degradation behavior of electrical properties may be explained by the pinning of domain walls by some radiation induced effect. GaPO4-PWAS doesn’t show reasonable degradation in electrical properties. GaPO4 has good radiation endurance, although amplitude sensitivity is relatively low.

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