Article
Mechanics
Rong Wang, Qi Wu, Ke Xiong, Hanqi Zhang, Yoji Okabe
Summary: This study evaluated the number of matrix cracks in carbon fiber reinforced plastics using linear and nonlinear acousto-ultrasonic detections. The results showed that matrix cracks increased with applied load, as confirmed by acoustic emission detection. Additionally, the study discussed the effects of cycle number and center frequency on ultrasonic sensitivities.
COMPOSITE STRUCTURES
(2021)
Article
Construction & Building Technology
Ryulri Kim, Jiyoung Min, Eunjong Ahn, Hajin Choi
Summary: Concrete plays an important role in national infrastructure, but degradation issues caused by climate change require non-destructive testing to assess its durability. A non-contact ultrasonic system was developed to evaluate freeze-thaw damage, and an algorithm based on leaky ultrasonic wave velocities was proposed to assess concrete damage.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Mohammed Aslam, Praveen Nagarajan, Mini Remanan
Summary: Nonlinear wave mixing is a potential method for evaluating localized micro-damage in structures, offering unique advantages over nonlinear ultrasonic techniques. It can be used to detect and localize subsurface cracks in concrete structures.
STRUCTURAL CONTROL & HEALTH MONITORING
(2022)
Article
Engineering, Civil
So Yeong Choi, Won Jun Lee, Eun Ik Yang
Summary: This paper investigates the characteristics of concrete exposed to early frost damage and examines the relationships between compressive strength and static and dynamic elastic moduli in different frost environments. Frost initiation occurred at different durations and temperatures. The study also compares the influence of different coarse aggregates on the properties of the concrete. The experimental results show a significant decrease in compressive strength when exposed to frost damage, but no significant change in elastic moduli.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Zebadiah Miles, Beytullah Aydogan, Guillermo Huanes-Alvan, Himanshu Sahasrabudhe, Sunil Kishore Chakrapani
Summary: This article characterizes the as-fabricated state of Inconel 718 samples fabricated using laser directed energy deposition (DED) and compares its ultrasonic properties with conventional IN718 samples. The results show that the complex metastable microstructures of laser-DED samples can significantly influence the baseline ultrasonic response, with higher attenuation and backscatter values caused by strong grain boundary scattering from large macrograins. Additionally, the ultrasonic response is found to be dependent on the fabrication direction, different from the transverse directions.
APPLIED SCIENCES-BASEL
(2023)
Article
Construction & Building Technology
Leonardo M. Massone, Eduardo Bedecarratz, Fabian Rojas, Mario Lafontaine
Summary: Nonlinear modeling was used to analyze a reinforced concrete building that suffered flexural damage during the 2010 Chile earthquake. The main cause of the wall damage was identified as being due to its large size, significant amount of longitudinal steel reinforcement in the flange, and poor detailing of the web boundary.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Construction & Building Technology
Robert J. Stevens, W. Spencer Guthrie, Jared S. Baxter, Brian A. Mazzeo
Summary: This research evaluates the performance of polyester-polymer concrete (PPC) overlays on bridge decks in the United States, aiming to inform the further development of a new PPC specification. The study uses nondestructive testing methods to assess the properties of in situ PPC and provides new recommendations for hardness testing, skid resistance testing, patching, and surface preparation based on the findings. The results demonstrate the effectiveness of nondestructive testing in evaluating the performance of PPC overlays and guiding specification development.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Chemistry, Physical
Pawel Karol Frankowski, Tomasz Chady
Summary: This paper focuses on the impact of magnetization on the detection and evaluation results of reinforced concrete structures, and proposes a new approach to improve measurement results for complex structures using different magnetization methods.
Article
Construction & Building Technology
Vladimir Guilherme Haach, Ricardo Carrazedo, Paula de Oliveira Ribeiro, Luiz Paulo Alves Ferreira, Izadora Pivotto Abe
Summary: This study identified the anisotropic patterns of concrete specimens using impact acoustics and ultrasound measurements. Although the effect is small, it could be clearly identified through these tests.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Engineering, Mechanical
Soffian Noor Mat Saliah, Noorsuhada Md Nor, Noorhazlinda Abd Rahman, Shahrum Abdullah, Mohd Subri Tahir
Summary: This study explores the restoration and repair of reinforced concrete beams damaged by monotonic loading using epoxy resin and the acoustic emission technique. The repaired beam showed a higher maximum load than the reference beam, but the AE analysis indicated a lower emission value, suggesting a direct correlation between average frequency, rise angle value, and crack patterns on the beams.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Engineering, Mechanical
Junzhen Wang, Yanfeng Shen, Danyu Rao, Wu Xu
Summary: This article introduces an instantaneous-baseline multi-indicial nonlinear ultrasonic resonance spectral correlation technique for fatigue crack detection and quantification. The technique proposes multiple damage indices to correlate ultrasonic resonance spectra and investigate three perspectives of nonlinear resonance phenomena for detecting and monitoring fatigue crack growth. Experimental results demonstrate remarkable sensitivity to fatigue crack nucleation and growth, distinguishing from existing techniques by focusing on contact acoustic nonlinearity from localized cracks rather than diffused material nonlinearity.
NONLINEAR DYNAMICS
(2021)
Article
Environmental Sciences
Takashi Miwa, Yuri Nakazawa
Summary: Early nondestructive inspection of rebar corrosion in reinforced concrete structures is important, and a practical, accurate, high-speed, and high-resolution method has not yet been proposed. This paper proposes a vibro-Doppler radar (VDR) method for quantitative evaluation of rebar corrosion, and develops a VDR system based on a pulse radar that is 100 times faster than the conventional system. Experimental results show that this method can be used for nondestructive evaluation of localized rebar corrosion.
Article
Construction & Building Technology
Jin Soo Bang, Hong Jae Yim
Summary: This study evaluates the segregation of fresh concrete pavements under excessive vibration by measuring the electrical resistivity using the surface-contact electrode method. The degree of segregation was evaluated using the measured electrical resistivity and its decreased ratio. Under excessive vibration, the electrical resistivity of concrete having low slump values decreased due to the rising of water without the settlement of coarse aggregate, but the concrete mixture with the highest workability showed that the coarse aggregate settled about 160% under excessive vibration with a decreased electrical resistivity of about 15%.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Chemistry, Physical
Jinzhong Zhao, Jin Wu, Xuejun Chen, Ruifu Zeng
Summary: This study explores the monitoring technique of concrete carbonation at different temperatures by measuring the longitudinal ultrasonic nonlinear parameters of carbonated concrete using an embedded composite piezoelectric transducer (ECPT) and a surface-mounted transducer. The effect of temperature (-20°C to 40°C) and water-cement ratio on ultrasonic parameters of carbonated concrete is investigated. The results show that ECPT is effective in monitoring the changes in ultrasonic parameters of carbonated concrete. The temperature has a slight influence on the relative nonlinear parameters of carbonated concrete, while the water-cement ratio significantly affects the nonlinear parameters.
Article
Construction & Building Technology
Ryulri Kim, Ukyong Woo, Myoungsu Shin, Eunjong Ahn, Hajin Choi
Summary: This study monitored the self-healing process in concrete incorporating two types of healing agents using resonance acoustic spectroscopy techniques. The results showed that the linear resonance frequency increased after 63 days of self-healing, while the change in the acoustic nonlinearity parameter was affected by partially filled cracks.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Tuan H. A. Nguyen, Tinh Quoc Bui, Sohichi Hirose
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2018)
Article
Chemistry, Multidisciplinary
Jason Maximino C. Ongpeng, Andres Winston C. Oreta, Sohichi Hirose
APPLIED SCIENCES-BASEL
(2018)
Article
Chemistry, Multidisciplinary
Jason Maximino C. Ongpeng, Andres Winston C. Oreta, Sohichi Hirose
APPLIED SCIENCES-BASEL
(2018)
Article
Construction & Building Technology
Jason Maximino C. Ongpeng, Andres Winston C. Oreta, Sohichi Hirose
ADVANCES IN CIVIL ENGINEERING
(2018)
Article
Mechanics
Hossein Saberi, Tinh Quoc Bui, Akira Furukawa, Alireza Rahai, Sohichi Hirose
COMPOSITE STRUCTURES
(2020)
Article
Materials Science, Characterization & Testing
Kazuyuki Nakahata, Taizo Maruyama, Sohichi Hirose
Summary: The study applies a particle filter (PF) to identify flaw geometry in ultrasonic nondestructive testing, merging simulation data with measured data using a probabilistic approach to deal with errors and enhance accuracy and convergence speed.
JOURNAL OF NONDESTRUCTIVE EVALUATION
(2021)
Article
Mechanics
Davinder Kumar, Dilbag Singh, Sushil K. Tomar, Sohichi Hirose, Takahiro Saitoh, Akira Furukawa
Summary: The linear theory of nonlocal elastic material with double porosity structure is developed within the context of Eringen’s theory. It is found that in the medium there may exist four basic plane waves, with the coupled dilatational waves being more affected by nonlocality, while the transverse wave is less affected by the presence of voids.
ARCHIVE OF APPLIED MECHANICS
(2021)
Article
Mechanics
Chanh Dinh Vuong, Tinh Quoc Bui, Sohichi Hirose
Summary: This paper introduces a new damage method aimed at better capturing mixed-mode fracture behavior in quasi-brittle materials. The method features mesh insensitivity and demonstrates good applicability in two-dimensional numerical examples.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Engineering, Mechanical
Chanh Dinh Vuong, Tinh Quoc Bui, Sohichi Hirose
Summary: A novel damage model is proposed to accurately capture direction-dependent damage evolution, which is crucial for predicting crack paths in composite and polycrystalline materials.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Acoustics
Supawat Wongthongsiri, Sohichi Hirose
Summary: This paper investigates the scattering behavior of guided shear horizontal (SH) waves in a two-dimensional, isotropic, and linear elastic layered plate with partially debonded interface. By analyzing the reflection and transmission coefficients of scattered waves, the study provides numerical results on the variations of scattering coefficients and scattering phenomena under different parameters such as mode of the incident wave, materials, locations, and length of debonding. The potential of utilizing suitable wave mode for debonding detection is also suggested.
SHOCK AND VIBRATION
(2022)
Article
Engineering, Multidisciplinary
Chen Yang, Peng Li, Xueli Zhao, Bin Wang, Dianzi Liu, Zhenghua Qian, Boris Zaitsev, Iren Kuznetsova, Sohichi Hirose
Summary: An analytical and meshless modeling approach is proposed to solve the thickness shear vibration in an infinite piezoelectric quartz resonator with partial non-circular electrodes. The method achieves higher calculation accuracy, avoids mesh division, and satisfies continuity conditions over the whole interface or boundary. Numerical calculations of resonance frequencies and mode shapes for different electrode shapes validate the method's precision and applicability, providing insights into the influence of non-circular electrodes on the quartz resonator's performance.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Mechanics
Davinder Kumar, Dilbag Singh, Sushil K. Tomar, Sohichi Hirose, Takahiro Saitoh, Akira Furukawa, Taizo Maruyama
Summary: The reflection phenomena of a set of coupled longitudinal waves/shear wave striking obliquely against the mechanically stress-free boundary surface of a uniform nonlocal elastic solid half-space with double porosity structure are investigated. The formulae for reflection coefficients and their corresponding energy ratios are derived for both the dissipative and non-dissipative models by employing appropriate nonlocal stress-free boundary conditions at the surface. The variations of these coefficients with the angle of incidence are computed for a specific model. It is found that the presence of nonlocality, porosities of both types, frequency, and angle of incidence all affect the reflection coefficients.
ARCHIVE OF APPLIED MECHANICS
(2023)
Proceedings Paper
Engineering, Civil
Haruhiko Takeda, Takahiro Saitoh, Sohichi Hirose
Summary: This research presents forward and inverse scattering analyses for a cavity in 3-D viscoelastic media. The scattered waveforms obtained by CQBEM in the time domain are transformed into frequency-domain waveforms, which are then used to reconstruct a cavity in 3-D viscoelastic media. Numerical results are shown to validate the proposed methods.
PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON NUMERICAL MODELLING IN ENGINEERING (NME 2021), VOL 1: NUMERICAL MODELLING IN CIVIL ENGINEERING
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Bin Wang, Zhenghua Qian, Sohichi Hirose
2018 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
(2018)
Article
Materials Science, Characterization & Testing
Jason Maximino C. Ongpeng, Andres Winston C. Oretat, Sohichi Hirose
MATERIALS EVALUATION
(2018)
