Numerous computer-aided techniques have been created to automatically detect defects and imperfections in welding radiography images. The purpose of these strategies is to circumvent the challenges that are associated...
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(纸本)9798331509262
Numerous computer-aided techniques have been created to automatically detect defects and imperfections in welding radiography images. The purpose of these strategies is to circumvent the challenges that are associated with human interpretation. In the subject of welding problem diagnostics, deep learning algorithms have garnered a substantial amount of attention due to the inherent benefits that they deliver. These advantages include powerful generalization capabilities and automated feature extraction techniques. Additional research is required, however, to investigate several various areas. These features include the gathering and improvement of welding radiography data, the selection and development of deep neural networks, and the enhancement of the model's capacity to be applied to a variety of situations while being easily understandable. This work intends to construct an automated system that can identify defects in welding by utilizing a semantic segmentation technique on radiographic images taken from a specific dataset of welds. This is taking into consideration the context in which this study is being conducted. Utilizing the UNet architecture, the procedure entails the training of several models, in addition to the incorporation of transfer learning strategies that utilize multiple backbones. A comprehensive comparative analysis is carried out after the model has been developed, and the evaluation criteria that are used are those that have been developed expressly for deep learning models. The results of the tests demonstrate that the method that was recommended is effective in precisely defining the boundaries of the various types of Defects and in faithfully identifying the various types of defects. In addition, the findings demonstrate that the system is capable of doing an automatic analysis of radiographic images to detect welding defects. Due to this fact, it is an indispensable component for quality inspection systems that are utilized in welding
Autonomous robotics and mechatronics have drastically changed the manufacturing and healthcare sectors by increasing productivity, precision, and flexibility. This work addresses the pressing need for new methods to a...
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The main idea of this article is to provide further knowledge related to the application of pure biodiesel in a custom power generator. Previous research has shown preliminary results regarding the potential of Pangiu...
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Heat load is a pivotal metric for ensuring the safety of blast furnace equipment in the iron and steel smelting industry, crucial for monitoring the heat exchange process of blast furnace cooling walls and evaluating ...
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The dynamics of inverted pendulum systems have an inherit property of instability, nonlinearity and underactuation. Therefore, the inverted pendulum systems have been recognized as a benchmark problem to validate emer...
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Minimally invasive surgery(MIS)robots,such as single-arm stapling robots,are key to oral and maxillofacial surgery because they overcome space constraints in the oral cavity and deep ***,biodegradable suture staples s...
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Minimally invasive surgery(MIS)robots,such as single-arm stapling robots,are key to oral and maxillofacial surgery because they overcome space constraints in the oral cavity and deep ***,biodegradable suture staples should be developed for the single-arm stapling robots to avoid a secondary *** this aim,a new type of Mg-3Zn-0.2Ca-2Ag biodegradable alloy wire was developed in this study applied as suture *** tensile strength,yield strength,and elongation are 326.1 MPa,314.5 MPa,and 19.6%,***,the alloy wire attains the highest yield strength value reported among all the biodegradable Mg wires,which is mainly attributed to fine grain strengthening and second phase strengthening such as Mg_(2)Zn_(11) nano phase ***,the corrosion rate of this alloy wire in simulated body fluid(SBF)reaches 26.8 mm/y,the highest value among all the biodegradable Mg alloy wires reported so far,which is mainly from the intensified galvanic corrosion between the Ag17Mg54 phase and the Mg *** vitro studies demonstrate that the alloy wire exhibits good blood compatibility and low *** cone beam computed tomography(CBCT)data shows that the suture staple made of the Mg alloy wire provides better mechanical support in the early postoperative *** the single arm robot tests,it confirms that suture staples can close the wound tightly and remain stable over *** research provides a good material selection for the automated suturing in oral and throat surgery robots.
This work investigates the change in the enclosed volume of an axisymmetric non-linear hyper-elastic membrane pump subjected to dielectric actuation. The equilibrium equations in cylindrical coordinates, coupled with ...
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Over the past decade, there's been tremendous advancements in soft and highly stretchable circuitry for use in epidermal electronics for health monitoring, wearable computing, and soft robotics. As these technolog...
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This paper presents the Kinematic and Kinetic properties of the 3-RRS parallel manipulator that has been designed and prototyped at the ARAS Lab, together with an extensive experimental setup. Inverse and forward kine...
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This work is a supplement to the work of Sneddon on axisymmetric Boussinesq problem in 1965 in which the distributions of interior-stress fields are derived here for a punch with general profile.A novel set of mathema...
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This work is a supplement to the work of Sneddon on axisymmetric Boussinesq problem in 1965 in which the distributions of interior-stress fields are derived here for a punch with general profile.A novel set of mathematical procedures is introduced to process the basic elastic solutions(obtained by the method of Hankel transform,which was pioneered by Sneddon)and the solution of the dual integral *** processes then enable us to not only derive the general relationship of indentation depth D and total load P that acts on the punch but also explicitly obtain the general analytical expressions of the stress fields beneath the surface of an isotropic elastic *** usually known cases of punch profiles are reconsidered according to the general formulas derived in this study,and the deduced results are verified by comparing them with the classical ***,these general formulas are also applied to evaluate the von Mises stresses for several new punch profiles.
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