Explanipedia

Efficient Vibration Measurement and Modal Shape Visualization Based on Dynamic Deviations of Structural Edge Profiles Open

Andong Zhu, Xinlong Gong, Jie Zhou, Xiaolong Zhang, Dashan Zhang · 2024

As a non-contact method, vision-based measurement for vibration extraction and modal parameter identification has attracted much attention. In most cases, artificial textures are crucial elements for visual tracking, and this feature limit…

Estimation of Tire Side-Slip Angles Based on the Frequency Domain Lateral Acceleration Characteristics Inside Tires Open

Yu Tang, Liang Tao, Yuanqiang Li, Dashan Zhang, Xiaolong Zhang · 2024

The identification and control of tire side slip angle is the key to vehicle stability control. Intelligent tire technology based on the sensing of side-slip acceleration inside the tire provides a novel method for estimating the tire side…

Filtered Partial Differential Equations: a robust surrogate constraint in physics-informed deep learning framework Open

Dashan Zhang, Yuntian Chen, Shiyi Chen · 2023

Embedding physical knowledge into neural network (NN) training has been a hot topic. However, when facing the complex real-world, most of the existing methods still strongly rely on the quantity and quality of observation data. Furthermore…

A method to reduce open optical path noise interference in two-dimensional gas detection of farmland Open

Hua Gao, Qi Li, Dashan Zhang, Lu Liu, Yanwei Gao , et al. · 2023

The two-dimensional distribution method based on the laser spectrum is widely used in the reconstruction of two-dimensional temperature fields or concentration fields. However, the existing methods are all based on small-scale measurements…

Recognition and Detection of Persimmon in a Natural Environment Based on an Improved YOLOv5 Model Open

Ziang Cao, Fangfang Mei, Dashan Zhang, Bingyou Liu, Yuwei Wang , et al. · 2023

Accurate and rapid recognition of fruit is the guarantee of intelligent persimmon picking. Given the changes in the light and occlusion conditions in a natural environment, this study developed a detection method based on the improved YOLO…

Vision-Based Structural Modal Identification Using Hybrid Motion Magnification Open

Dashan Zhang, Andong Zhu, Wenhui Hou, Lu Liu, Yuwei Wang · 2022

As a promising alternative to conventional contact sensors, vision-based technologies for a structural dynamic response measurement and health monitoring have attracted much attention from the research community. Among these technologies, …

Feature Fusion for Weld Defect Classification with Small Dataset Open

Wenhui Hou, Lulu Rao, Andong Zhu, Dashan Zhang · 2022

Detecting defects from weld radiography images is an important topic in the field of nondestructive testing. Many intelligent detection systems are constructed based on computer. Feature extraction is critical for constructing such system …

Review on Computer Aided Weld Defect Detection from Radiography Images Open

Wenhui Hou, Dashan Zhang, Ye Wei, Jie Guo, Xiaolong Zhang · 2020

The weld defects inspection from radiography films is critical for assuring the serviceability and safety of weld joints. The various limitations of human interpretation made the development of innovative computer-aided techniques for auto…

Study on Environment and Carbon Sequestration Effect of Wood Structure Building Based on Sustainable Development Open

Jie Fan, Lei Chen, Dashan Zhang, Haijie Nie, An Mao , et al. · 2020

Carbon Storage Estimation of wood products is one of the important directions of international climate change. As a building material of ecological sustainable development, wood structure building has many advantages, and its performance i…

Tractive performances of single grouser shoe affected by different soils with varied moisture contents Open

Jun Ge, Dashan Zhang, Xiulun Wang, Chengmao Cao, Liangfei Fang , et al. · 2019

The objective of this study is to clarify the differences of tractive performances generated by the sandy loam-grouser system and the clay soil-grouser system. The tractive performances of the grouser/track shoes are widely researched by p…

Structural Low-Level Dynamic Response Analysis Using Deviations of Idealized Edge Profiles and Video Acceleration Magnification Open

Dashan Zhang, Liangfei Fang, Wei Ye, Jie Guo, Bo Tian · 2019

The development of high-speed camera systems and image processing techniques has promoted the use of vision-based methods as a practical alternative for the analysis of non-contact structural dynamic responses. In this study, a deviation e…

Structural dynamic response analysis using deviations from idealized edge profiles in high-speed video Open

Dashan Zhang, Bo Tian, Wei Ye, Wenhui Hou, Jie Guo · 2019

In our study, a deviation extraction method is introduced to obtain subtle deviation signals from structural idealized edge profiles. The deviations are employed to reconstruct an analysis matrix that consists of global translations along …

Medermycin-Type Naphthoquinones from the Marine-Derived <i>Streptomyces</i> sp. XMA39 Open

Yong‐Jun Jiang, Dashan Zhang, Hao-Jian Zhang, Jiaqi Li, Wanjing Ding , et al. · 2018

Four new medermycin-type naphthoquinones, strepoxepinmycins A-D (1-4), and one known compound, medermycin (5), were identified from Streptomyces sp. XMA39. Their structures were elucidated by analysis of HRESIMS, 1D and 2D NMR spectroscopi…

Vision-based displacement measurement sensor using modified Taylor approximation approach Open

Bingyou Liu, Dashan Zhang, Jie Guo, Changan Zhu · 2016

The development of image sensors and optics lenses has contributed to the rapidly increasing use of vision-based methods as noncontact measurement methods in many areas. A high-speed camera system is developed to realize the displacement m…

A High-Speed Vision-Based Sensor for Dynamic Vibration Analysis Using Fast Motion Extraction Algorithms Open

Dashan Zhang, Jie Guo, Xiujun Lei, Changan Zhu · 2016

The development of image sensor and optics enables the application of vision-based techniques to the non-contact dynamic vibration analysis of large-scale structures. As an emerging technology, a vision-based approach allows for remote mea…

In Situ Measurement of Wind-Induced Pulse Response of Sound Barrier Based on High-Speed Imaging Technology Open

Chunli Zhu, Jie Guo, Dashan Zhang, Yuan Shen, Dongcai Liu · 2016

The lifetime of the sound barrier is threatened by high-speed train-induced impulsive wind pressure as it passes by. The vibration response of the sound barrier during the process of train passing is difficult to be measured using conventi…

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