Dynamic characteristics of basalt fibre-reinforced polymer cement mortar bolts and its applicability for bolt defect detection

D Zhao, S Wen, L Zhu - Journal of Building Engineering, 2024 - Elsevier
Basalt fiber reinforced polymer (BFRP) bolt has the advantages of high tensile strength, low
quality and corrosion resistance. This kind of bolt has a potential application prospect in …

[HTML][HTML] Variation characteristics of key dynamic measurement signals of anchor bolts with different anchorage qualities under pull-out loads

B Sun, C Zhu, J Zou, S Wang, S Zeng - Alexandria Engineering Journal, 2024 - Elsevier
Pull-out load and the cement-sand ratio (CSR) can affect the non-destructive testing (NDT)
results of anchor bolts. Therefore, in this article, NDT experiments were conducted on both …

Effect of using steel bar reinforcement on concrete quality by ultrasonic pulse velocity measurements

O Nanayakkara, HM Najm, MMS Sabri - Materials, 2022 - mdpi.com
Non-destructive tests (NDTs) represent one of the solutions that aid engineers in evaluating
the strength of materials. However, the results obtained using such tests are still …

Method for identifying the grout defects of the anchors at ultra-early-stage based on time-domain waveform characteristic reflection points

B Sun, C Zhu, J Zou, S Wang, S Zeng - Russian Journal of Nondestructive …, 2023 - Springer
Anchors constitute a common form of structural support in geotechnical engineering. Precise
identification of ultra-early-stage (UES) anchoring quality is crucial to ensure the integrity of …

Investigating the unbonded sections of fully grouted rock bolts using a microphone

S Kang, JD Yu, D Lee, JS Lee - Transportation Geotechnics, 2025 - Elsevier
In fully grouted rock bolts, unbonded sections may exist at any location within holes. This
study aims to investigate the integrity of grouted rock bolts using a microphone and rock-bolt …

Effect of bias magnetic field on transducer efficiency in electromagnetic ultrasonic non-destructive testing of Rock bolt

X Dong, Z Ma, Z Jiang, Q Wang, F Wang - Sensors and Actuators A …, 2024 - Elsevier
Non-destructive testing (NDT) of rock bolt anchoring quality is an important part of
engineering quality and safety control, electromagnetic ultrasonic NDT is one of the …

Neural nonparametric stability indicator for self-excited dynamical systems

K Lalik - IEEE Access, 2024 - ieeexplore.ieee.org
This article introduces a novel methodology employing deep-learning neural networks to
estimate Lyapunov functions in dynamic systems accurately. Unlike traditional parametric …

Investigation on the variations of dynamic characteristics of anchor bolts considering transverse inertia effects under tensile loads

B Sun, J Zou, C Peng, C Zhu… - Measurement Science and …, 2024 - iopscience.iop.org
In the case where tunnel anchor bolts are located in strata with limited surrounding rock
boundaries, the response signals of the anchor bolts are affected by the tensile load and the …

Assessment of the Conditions of Anchor Bolts Grouted with Resin and Cement Through Impact-Echo Testing and Advanced Spectrum Analysis

W Zatar, F **ao, G Chen, H Nghiem - Buildings, 2025 - mdpi.com
Anchor bolts, such as rock bolts and concrete anchors, are widely used in civil, geotechnical,
and mining engineering for anchorage and ground support. They are used in retaining …

[PDF][PDF] Effect of Using Steel Bar Reinforcement on Concrete Quality by Ultrasonic Pulse Velocity Measurements. Materials 2022, 15, 4565

O Nanayakkara, HM Najm, MMS Sabri - 2022 - academia.edu
Non-destructive tests (NDTs) represent one of the solutions that aid engineers in evaluating
the strength of materials. However, the results obtained using such tests are still …