搜索结果: 1-15 共查到“工学 Crack”相关记录56条 . 查询时间(0.062 秒)
DEEP LEARNING AND IMAGE PROCESSING FOR AUTOMATED CRACK DETECTION AND DEFECT MEASUREMENT IN UNDERGROUND STRUCTURES
Deep Learning Automated Crack Detection Photographic Tunnelling Surveys
2018/6/4
This work presents the combination of Deep-Learning (DL) and image processing to produce an automated cracks recognition and defect measurement tool for civil structures. The authors focus on tunnel c...
A COST-EFFECTIVE METHOD FOR CRACK DETECTION AND MEASUREMENT ON CONCRETE SURFACE
crack detection depth camera image processing stereovision
2018/3/6
Crack detection and measurement in the surface of concrete structures is currently carried out manually or through Non-Destructive Testing (NDT) such as imaging or scanning. The recent developments in...
COMPARATIVE EVALUATION OF PAVEMENT CRACK DETECTION USING KERNEL-BASED TECHNIQUES IN ASPHALT ROAD SURFACES
Mobile Mapping RGB Camera Road Crack Extraction Kernel-based Segmentation Feature Fusion
2016/7/5
With the increasing demand for the digital survey and acquisition of road pavement conditions, there is also the parallel growing need for the development of automated techniques for the analysis and ...
Crack detection at concrete construction units from photogrammetric data using image processing procedures
Photogrammetry Change detection Tracing
2015/8/20
Cracks on the surface of a concrete construction are measured and evaluated by a digital photogrammetric method. Knowing these
cracks, the behaviour of the construction, especially using textile rein...
Monitoring Crack Origin and Evolution At Concrete Elements Using Photogrammetry
Change Detection Tracing High resolution
2015/7/15
Controlling and monitoring of crack origin and evolution of concrete elements is an important task in research of building materials.
The efficiency of the reinforcement to the bearing capacity depen...
Finite deformation formulation for embedded frictional crack with the extended finite element method
finite deformation frictional crack embedded discontinuity extended finite element
2015/7/1
We reformulate an extended finite element (FE) framework for embedded frictional cracks in elastoplastic solids to accommodate finite deformation, including finite stretching and rotation. For the FE ...
A contact algorithm for frictional crack propagation with the extended finite element method
contact algorithm frictional crack extended finite element method
2015/7/1
We present an incremental quasi-static contact algorithm for path-dependent frictional crack propagation in the framework of the extended finite element (FE) method. The discrete formulation allows fo...
A Synergistic Approach to Modeling Crack Propagation in Nanoreinforced Polymer Composites
Modeling Crack Propagation Nano Reinforced Polymer Composites
2014/10/23
Empirical studies indicate that a polymer reinforced with micro- and nano-scale particles could enhance both the stiffness and toughness of the composite. In addition to these augmented attributes, th...
Pulse-like and crack-like ruptures in experiments mimicking crustal earthquakes
earthquake physics mechanics of faulting rupture modes shear cracks velocity-dependent friction
2014/4/8
Theoretical studies have shown that the issue of rupture modes has important implications for fault constitutive laws, stress conditions on faults, energy partition and heat generation during earthqua...
Fatigue-crack-initiation numerical modelling of a Ni-base powder metallurgy alloy
fatigue-crack-initiation numerical simulation slip system powder metallurgy Voronoi tessellation
2014/5/21
A simplified three-dimensional numerical model was presented to simulate the micro-crack nucleation and growth to some predefined dimension (approximately 0.38mm) on the throat surface of a Ni-base po...
Fatigue reliability of a stiffened panel subjected to correlated crack growth
Fatigue reliability Stiffened panel Crack growth Inspection Reliability updating
2012/4/26
The objective of this work is to analyze the fatigue reliability of a stiffened panel subjected to the growth of correlated cracks. A probabilistic crack growth model is applied, allowing for the exis...
I-beam Crack Identification Based on Study of Local Flexibility due to Crack
crack identification I-beam local flexibility
2011/8/5
Local flexibility of crack plays an important role in crack identification of structures. Analytical methods on local flexibility in a cracked beam with simple geometric crossing sections, such as rec...
Structural Surface Crack Monitoring Method Based on Electrical Potential Technique and Modern Surface Technology
crack monitoring electrical potential technique surface technology
2011/8/4
Crack monitoring plays a great role in modern structural health monitoring, however, most of the conventional crack inspections have disadvantages in terms of the accuracy, expense, reliability, durab...
Structural Surface Crack Monitoring Method Based on Electrical Potential Technique and Modern Surface Technology
crack monitoring electrical potential technique surface technology coating sensor
2011/8/4
Crack monitoring plays a great role in modern structural health monitoring, however, most of the conventional crack inspections have disadvantages in terms of the accuracy, expense, reliability, durab...
基于多传感器融合的鸡蛋裂纹系统性识别（Systematic Recognition Research of Egg Crack Based on Multi-sensor Fusion）
鸡蛋 裂纹 支持向量机 判别模型
2010/12/29
通过图像分析、敲击振动和电子鼻3种传感器分别输出与鸡蛋外部常规裂纹、外部细小裂纹和内部裂纹有关的无损检测参数并进行实验，设计一组针对鸡蛋裂纹程度的支持向量机判据。用该判据并结合实验数据构建一对多的支持向量数为4的鸡蛋裂纹判别模型。模型性能参数（模型拟合度为0.9735，收敛误差在0.0001以内）和验证性实验（对确定的5种裂纹状态判别准确率均可达90%）表明该模型具有可信的结构和较好的判别能力。