Relevant bibliographies by topics / Automatic horizontal boring machine

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Automatic horizontal boring machine'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Automatic horizontal boring machine"

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Kneib, Kassel, and Lorenz. "Automatic seismic prediction ahead of the tunnel boring machine." First Break 18, no. 7 (2000): 295–302. http://dx.doi.org/10.1046/j.1365-2397.2000.00079.x.

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Li, Zhi, X. S. Zhao, and D. W. Zhang. "The Research of the Dynamic Characteristics of Horizontal Jig Boring Machine." Advanced Materials Research 712-715 (June 2013): 1391–94. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.1391.

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Modal analysis is one way of studying the dynamic characteristics of the mechanical. In order to study the dynamic characteristics of machine tool,numerical machine model is set up with finite element analysis software,of which validity is verified by experimental modal analysis.The experimental test also provide the boundary conditions, so as to further structure modification and dynamic characteristic design
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Fuoco, Stefano. "The Tunnel Boring Machine Advancements in Horizontal and Up-Hill Tunnels." American Journal of Applied Sciences 6, no. 6 (2009): 1126–32. http://dx.doi.org/10.3844/ajassp.2009.1126.1132.

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Tong, Zhi Neng. "Synchronization of Laser Measurement Technology Application on Automatic Orientation." Applied Mechanics and Materials 291-294 (February 2013): 2424–27. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.2424.

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This paper introduces the process of shield tunnel construction in the advanced synchronous automatic laser measurement oriented technology, overcomes the artificial measurement process cannot get boring machine real-time posture and deviation, construction more difficult to control, affect the construction progress and shortcomings, the similar project construction provides effective reference.
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Qiao, Xu, Liu, and Wang. "Study on the Horizontal Axis Deviation of a Small Radius TBM Tunnel Based on Winkler Foundation Model." Applied Sciences 10, no. 3 (2020): 784. http://dx.doi.org/10.3390/app10030784.

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During the construction stage of the small radius TBM (tunnel boring machine) interval, the improper control of the boring parameters and the boring posture can cause the horizontal axis deviation of the shield tunnel. In order to address this issue, the TBM segments lining structure of the small radius interval is simplified as the continuous circular curved beam based on the longitudinal equivalent continuous model and Winkler elastic foundation beam theory. The theoretical model is solved through the transfer matrix method, and its applicability is verified by comparing it with the field monitoring data. It is found that the horizontal axis deviation of the completed tunnel increases with the total jack thrust, and the lateral displacement tends to be stable when the distance between the ring and the tail is far. The horizontal axis deviation has a negative relationship with the thrust difference or path difference when the jack thrust in the outside of the shield curve is larger than that of inside the shield curve. The horizontal axis deviation has a positive relationship with the thrust difference or path difference when the jack thrust in the outside of the shield curve is smaller than that of inside the shield curve.
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Zhang, Zhihuan, and Longhua Ma. "Attitude Correction System and Cooperative Control of Tunnel Boring Machine." International Journal of Pattern Recognition and Artificial Intelligence 32, no. 11 (2018): 1859018. http://dx.doi.org/10.1142/s0218001418590188.

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Recently, trajectory misalignment of tunnel boring machine (TBM) has become a key research area. Although TBMs have been extensively applied in tunneling, hunting motion remains due to inhomogeneous ground encountered during tunneling, TBM structures and ambiguity in attitude correction mechanism. In this paper, TBM attitude correction and motion are studied, and optimized fuzzy rule is obtained by taking into account various TBM constraints and the universe of fuzzy control; then, cooperative control over cylinders in various sections is proposed to reduce TBM trajectory tracking deviation from designed tunnel axis; moreover, a cascade control system combining outer-loop trajectory tracking and inner-loop pressure control is developed to enable unmanned automatic tunneling of the TBM. The practical application results reveal that the proposed system demonstrated accurate TBM attitude correction, high stability, strong engineering applicability and feasible real-time control.
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Xu, Hai, Jian Zhou, Panagiotis G. Asteris, Danial Jahed Armaghani, and Mahmood Md Tahir. "Supervised Machine Learning Techniques to the Prediction of Tunnel Boring Machine Penetration Rate." Applied Sciences 9, no. 18 (2019): 3715. http://dx.doi.org/10.3390/app9183715.

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Predicting the penetration rate is a complex and challenging task due to the interaction between the tunnel boring machine (TBM) and the rock mass. Many studies highlight the use of empirical and theoretical techniques in predicting TBM performance. However, reliable performance prediction of TBM is of crucial importance to mining and civil projects as it can minimize the risks associated with capital costs. This study presents new applications of supervised machine learning techniques, i.e., k-nearest neighbor (KNN), chi-squared automatic interaction detection (CHAID), support vector machine (SVM), classification and regression trees (CART) and neural network (NN) in predicting the penetration rate (PR) of a TBM. To achieve this aim, an experimental database was set up, based on field observations and laboratory tests for a tunneling project in Malaysia. In the database, uniaxial compressive strength, Brazilian tensile strength, rock quality designation, weathering zone, thrust force, and revolution per minute were utilized as inputs to predict PR of TBM. Then, KNN, CHAID, SVM, CART, and NN predictive models were developed to select the best one. A simple ranking technique, as well as some performance indices, were calculated for each developed model. According to the obtained results, KNN received the highest-ranking value among all five predictive models and was selected as the best predictive model of this study. It can be concluded that KNN is able to provide high-performance capacity in predicting TBM PR. KNN model identified uniaxial compressive strength (0.2) as the most important and revolution per minutes (0.14) as the least important factor for predicting the TBM penetration rate.
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Obreja, Claudiu, Gheorghe Stan, Lucian Adrian Mihaila, and Marius Pascu. "Application of Tree Graph Method for Reducing the Total Time of Tool Changing in Milling and Boring Machine Tools." Applied Mechanics and Materials 371 (August 2013): 431–35. http://dx.doi.org/10.4028/www.scientific.net/amm.371.431.

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With a view of increasing the productivity on CNC machine tools one of the main solution is to reduce, as much as possible, the auxiliary time consumed with the set-up and replacement of the tools and work pieces engaged in the machining process. Reducing the total time of the tool changing process by the automatic tool changer system can be also achieved through minimizing the number of movements needed for the actual exchange of the tool, from the tool magazine to the machine spindle (the optimization of the tool changing sequences). This paper presents a new design method based on the tree-graph theory. We consider an existing automatic tool changing system, mounted on the milling and boring machining centre, and by applying the new method we obtain all the possible configurations to minimize the tool changing sequence of the automatic tool changer system. By making use of the method proposed we obtain the tool changing sequences with minimum necessary movements needed to exchange the tool. Reconfiguring an existing machine tool provided with an automatic tool changer system by making use of the proposed method leads to obtaining the smallest changing time and thus high productivity.
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Pascu, Marius, Gheorghe Stan, Dragoș Andrioaia, and Lucian Adrian Mihaila. "System for Compensating the Rigidity of the Hydrostatic Guideways of the Column Saddle Subassembly of the Boring and Milling Machines." Applied Mechanics and Materials 371 (August 2013): 627–31. http://dx.doi.org/10.4028/www.scientific.net/amm.371.627.

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The improvement of the machining accuracy of boring and milling machines is imposed by the more and more demanding conditions on the accuracy of the work pieces to be machined. The specificity of this family, of boring and milling machines, consists of the horizontal motion of the milling spindle (quill) with implications on the application point of the gravity center. Thus, the variation of the application point of the sum of the component elements weights of the column saddle subassembly leads to modifications of the oil film thickness in the hydrostatic guideways, affecting the geometrical accuracy of the machine. This work is presenting a system of compensation and hydrostatic guiding of the column saddle subassembly. This new compensation system allows the pressure in the pockets to be modified by taking in consideration the position of the application point of the weight of the entire column saddle subassembly. The implementation of this compensation and guiding system on the boring and milling machine model AFP 220 has led to an increasing of two times the geometrical accuracy of the horizontality of the column saddle`s motion, compared to the variant without compensation.
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WANG Cai, 王彩, 李月强 LI Yueqiang, and 刘力双 LIU Lishuang. "Horizontal angle measurement of automatic navigation system of pipe jacking machine." Optical Technique 41, no. 3 (2015): 238–42. http://dx.doi.org/10.3788/gxjs20154103.0238.

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Dissertations / Theses on the topic "Automatic horizontal boring machine"

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Šohajek, Jiří. "Analýza vyvrtávacího procesu automatické horizontální vyvrtávačky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228141.

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The object of this dissertation is to analyse a drilling process of an automatic horizontal boring machine the SVD2 for drilling of bearing holes. There were problems with vibrations during drilling process, causing an extreme noise and this dissertation solves them. First of all it was necessary to analyse the vibrations, to examine a machining process and measure machine dynamics and statics. Another task was to compare measured results with mathematical models and after their analysis to design structural and other solutions. The SVD2 machine was designed on the basis of a previous type the SVD. Its conversion to a new one was based on adding of six spindles. As a result a number of drilled bodies was increased from one to four, so a performance was increased four times. That is why there was an original intention to rebuilt the other two spindle machines. To leave the basical parts of the machine without any modification ( such as a reinforcement of a mount and adjusting of a bigger distance of a side linear spindle guideway and a cross linear guideway of a support for clamping devices), would be unsuitable solution, which was confirmed after a measurement and a following analysis.
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Šebela, Michal. "Obslužná plošina horizontální vyvrtávačky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241869.

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The Diploma’s thesis deals with a construction design of a service platform for a horizontal boring machine. Input parameters are cabin dimensions, length and velocity of lift and shift. In the first part of the thesis is design arrangement solved. The lift is solved by a rack and a pinion. By the lift is drive design and gear calculation performed. Shift of the service platform is done by toothed belt. Air distribution with pneumatic parts choice is included in this thesis. Next part is divided to supporting frame and cabin design. It is made by welded profiles, in which a stress-strength analysis is performed. The last part of the thesis is divided to linear guide design. A part of this thesis is a drawing of an assembly facility and a movie about this service platform in a real service.
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Pavlíček, Alois. "Konstrukce horizontálního frézovacího a vyvrtávacího stroje." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231385.

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This master thesis deals with the engineering design of a headstock floor type boring/milling machine. At first, background research of boring machines and accessories is performed. The type and parameters of the floor type boring machine are chosen according to the background research. In the next part the thesis deals with the individual structural units of the headstock. The thesis also contains a 3D model of the headstock and fine drawing documentation. The 3D model of the horizontal floor type boring machine has been converted into a virtual reality environment.
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Tobolka, Ondřej. "Využití netradičních materiálů ve stavbě horizontálních vyrtávacích strojů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-382104.

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Thesis solves an issue of application unconventional materials used in horizontal boring machine design. Chosen problem is solved step by step from general selection of suitable material for supporting structure. The selected material is applicated on WFT 13 CNC machine design from production of Fermat and it is created 9 conceptual options of machine’s frame. Finite element method is used for analysis of conceptual options. Based on data from analyses, the best option is selected for constructional part with use of multi-criteria PATTERN method. Constructional part of thesis elaborates on the design of selected conceptual option and gives recommendation for essential processes used in development and production of sandwich structures. The master’s thesis comes with new construction solution for supporting structure of selected machine and especially insight in development and production of new unconventional materials in horizontal boring machines design.
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Nohavica, Radek. "Posouzení bezpečnosti činností obsluhy u vodorovné vyvrtávačky WHN 13 CNC." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417861.

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The diploma’s thesis deals with the current state of requirements for products resulting from directives of the European Parliament and the European Council. The aim of the thesis is a system analysis of the issue, proposal and justification of the chosen procedure for solving the objectives. Furthermore, the analysis of requirements of current standards and safety analysis related to the work of machine operators in the areas of operation, service and maintenance of horizontal boring machine WHN 13 CNC. The analysis is followed by a proposal for preventive measures for hazards where the value of risks and criticality is unacceptable, leading to their reduction.
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Novák, Tomáš. "Konstrukce horizontálního frézovacího a vyvrtávacího stroje." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231386.

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The subject of this diploma thesis is design of motion axes of horizontal milling and boring machines. The first part contains literary research of linear systems of feeding and equipment. The second part contains calculations and the design of the motion machine axis. The 3D model of the motion axis designed in SolidWorks 2010 software and part of drawings are also included in this thesis.
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TANG, CHIA-HUI, and 湯嘉輝. "Study on Straightness Deviation Compensation for Ram-type Spindle of Horizontal Boring Machine." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/11970517295413916079.

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博士<br>國立彰化師範大學<br>電機工程學系<br>102<br>This dissertation deal with the straightness deviation compensation for a ram-type spindle, which is to ensures that the accuracy of the straightness retained within an acceptable requirement while the ram is moving in the full travel. This research utilize hydraulic force to pull the ram structure to resist the falling accuracy, which is to raise the deviation caused by the weight of ram and gravity while ram stretching out of the support bracket. To ensure the tolerance while the ram reciprocates forth and back, the deviation of straightness accuracy of ram falling still meet the requirement of international accuracy standard, while the spindle performs the application of boring or facing. This dissertation applied the simulation by FEM and analyzed the performance of the mechanical structure of ram. According to the data base of the analyst, the compensation device for straightness tolerance control applied. In addition, a suitable hydraulic device is selected, and the electrical compensation device is developed. The simulation for the compensation device was done by Pspice software which is to confirm the applicability for ram straightness tolerance control. The experiment is done by checking the straightness of ram movement, face cutting and ball bar test. Then the testing piece was measured by 3D coordinate measuring machine which is to verify the dynamic accuracy under the compensation condition. The experiment discovered that the average value of accuracy is 31 μm under the machining condition without compensation device applied. After activating the ram compensation device, the result showed the average value of accuracy is 2 μm, which shows a great improvement of the accuracy for 29 μm. This finding revealed that the compensation device can promote the straightness accuracy and enhance machining capability for milling and boring accuracy. The research approved the applicability of ram type boring spindle. The machine is applicable to get into the high end international market.
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Wu, Ying lang, and 吳英郎. "Feasibility Analysis of Type-A Workpiece Outsourcing for CNC Horizontal Boring and Milling Machine." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/73996264921536552734.

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碩士<br>國立中正大學<br>高階主管管理碩士在職專班<br>102<br>The shock waves resulting from the modern trends of internationalization and globalization have produced major changes that affect the techniques of manufacturing that exist across the face of the modern world. This includes the manufacture of CNC machine tools, which due to my immediate experience prior to my work on this paper has become one of the corollary topics of this study. In terms of the content of the pending writing, the effects of modern production mechanics need to be considered at a new angle, new at least relative to the way one can read about them in the early post World War 2 literature. WW2 was an era in which the individual human stood tall and sweaty like a black smith, with a hammer (or at least an electric drill or alternative simple electrical device) in one hand and the piece being worked on in the other hand. However, that technically antique world is essentially past and is evolving increasingly rapidly as the days go by. One cannot manufacture modern electronic CNC machine tools using WW2 technology. New styles of equipment as well as new styles of thinking are required. Newer styles of thinking will further be required to supplant the current limitations of our minds and capacities. In fact, this paper is dedicated to a momentary alleviation of such limitations. Actually, the modern technological revolution is happening so rapidly that such alleviations tend to be very brief. This is one of the prices of rapid evolution. This paper attempts to make this point in terms of the modern capabilities and optimal use (to my current best estimate) of a group of serial processes involving inter-functional teamwork and a division of our present standards of labor. With adequate design abilities, skillful use of collaboration and management of outsourcing can lead to truly remarkable advantages with regard to the continuous integration of resources and the application various industrial expansionist strategies. A win-win value-doubling strategy for the firm owner and its various professional subcontractors is currently a common endeavor. However, it seems to me personally that such goals are in fact excessively small, but such issues will not be a topic. In fact, this study remains linked to strictly modern goals and ambitions. We have the basic framework of a large-to-medium (LME) scale CNC machine tool manufacturing company in Taiwan. The company manufactures some of the largest of the current CNC machine tools, but there is incompatibility between the available CNC machine tools and the production lines that manufacture the equipment. Nor do the specific tolerances and specifications of individual customers exactly fit the production capacities of the factory. For example, the CNC horizontal boring and milling machines (HBM) and typically ordered by the company’s customers require integration of specific assets into the requirements of the necessary manufacturing processes. The ability to meet the specific requirements of the customers implies that the company has a totally adequate supply of all the multi-capacity varied machines necessary to satisfy the production line requirements of each customer order accepted by the company. In fact, however, the demands far exceed the company’s manufacturing capacity. After investigating the machine for desirable operation with regard to the totality of the current job orders and defining the processing necessities, it becomes possible to list all the necessary processes. However, it becomes rapidly clear the company does not in fact have the equipment and ability for all these steps. Thus, it becomes clear that some of these steps will have to be outsourced. This becomes clearer after consideration of the calculation of equipment cost investment if we were to do the total manufacturing event in house. It should be recalled that we are considering manufacture of a relatively small number of large and heavy Type-A workpieces. Such workpieces are subject to evolution to higher technological forms as the product develops. Such workpieces require stress relieving, heat treatment, precise surface grinding and so on. New processes may be added. Old processes may be removed or modified. With regard to the dollar question, maximal dollar return involves not manufacturing this small number of large and durable equipment. A study of the cost factors indicate that, for present and foreseeable manufacturing operations, it is a superior plan to collaborate professionally with suitable partners. Former studies of a similar nature dealt mostly with small and medium size light-weight components produced in relatively large numbers. The respective firms produced parts of significantly consistent sizes and surface finishes. This present study will test the theoretical 11 sensitivity analysis (SA) using 5 Type-A workpieces for HBM units. By means of assistance from Lingo linear programming, the results will demonstrate that outsourcing and collaboration with professional subcontractors will optimize production management, manufacturing flexibility, tangible performance and company profit.
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CHANG, JEN-HAO, and 張仁豪. "The study on hydrostatic bearing design discussion for the table of horizontal boring machine." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/qre42e.

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碩士<br>國立高雄科技大學<br>機械與自動化工程系<br>107<br>Today， because of industry requirement, the workpiece is bigger and heaver ,and manufacturing precision is higher, too. The huge and precision machine tools’ price and profit are increasing. Loading heavy and huge workpiece, the table rigidity is basic ， the horizontal is significant conditions for precision manufacturing. The steadiness of machine tool table is very important. This paper studies on the design of hydrostatic bearing for the table of horizontal boring machine. After setting up the suitable width of land，have the effective area and applicable pressure with requierement loading capability. Then, choose the pump and adjust flow regulator to keep the table horizontal.
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Jiang, Dar-far, and 姜德發. "On the Design of Automatic Film Sealer and Adjustable Bag- Forming Head of an Intelligent Horizontal Form-Fill-Seal Packaging Machine." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/57124109440922276334.

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碩士<br>國立成功大學<br>機械工程研究所<br>81<br>An intelligent horizontal form-fill-seal packaging machine is an automatic packaging device equipped with automatic film- sealer and adjustable bag-former. This study presents a syste matic process to design and manufacture such packaging machine with desired performances. Based on the concept of synch-ronous tracking, an automatic film sealer is figured out. Solenoids along with a film fixing and sealing mechanism are used to make the spare film fixed and sealed. Linear bearing and circular guide rail are used for motion guidance. Timing belts and pulleys are employed to transmit power. Electromagnetic clutches together with a gear train are applied to shift the power flow. Servo- motors and a close loop control unit are designed to accomplish the task of tracking and sealing of film sealer. As for the bag-forming device, a four-bar mechanism is synthesized to adjust the blade height of the device. The film- guide-roller position and bag-width adjustment are performed by leader screws. Which are controlled by a step motor and a open- loop control unit. The contribution of the work is beneficial to the systematic design, automation, and improvement of production of packing machine for industry.
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Book chapters on the topic "Automatic horizontal boring machine"

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"horizontal earth boring machine." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_81347.

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"horizontal soil boring machine." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_81408.

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Conference papers on the topic "Automatic horizontal boring machine"

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Hu Dong-fang, Li Yan, and Shang Jian-dong. "Stiffness analysis and measurement for the key parts of the horizontal numerical control milling & boring machine." In 2010 International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2010. http://dx.doi.org/10.1109/mace.2010.5536661.

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Chen, Yong-Jou, and Jui-Pin Hung. "Compensation of the deformed ram spindle of a horizontal boring machine." In The 2016 International Conference on Applied Engineering, Materials and Mechanics (ICAEMM 2016). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813146587_0037.

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Liu, Yake, and Yueqiang Li. "Research on the automatic laser navigation system of the tunnel boring machine." In Seventh International Symposium on Precision Engineering Measurements and Instrumentation, edited by Kuang-Chao Fan, Man Song, and Rong-Sheng Lu. SPIE, 2011. http://dx.doi.org/10.1117/12.904848.

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Simões, Thayane De O., Aristófanes C. Silva, Johnatan C. Souza, João D. S. Almeida, and Anselmo C. Paiva. "Automatic Ocular Alignment Evaluation for Strabismus Detection Using Index of Phylogenetic Diversity and Support Vector Machine." In XV Workshop de Visão Computacional. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/wvc.2019.7631.

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Strabismus is a pathology that affects the parallelism between two eyes. Estimates show that 1.3% to 3.5% of children aged six months to six years have strabismus around the world. Strabismus can lead to irreversible loss of vision, so early detection and appropriate treatment increase the likelihood of alignment being restored to normal. That said, in this study we proposed an automatic evaluation system to detect strabismus in face images, analyzing the horizontal positioning of the limb center in relation to the center of the corners of the eyes. The proposed method consists of five steps: (1) acquisition, (2) detection of the eye region, (3) segmentation and reconstruction of the sclera, (4) detection of the limb region and corners of the eyes and (5) identification of the presence of strabismus, with this approach we obtain 90.1% sensitivity, 100% specificity and 91.1% accuracy.
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Motta, Lorenzo, Paolo Novelli, Philippe Darcis, Mariano Armengol, and Federico Tintori. "Flowlines and Risers Pipes Ends Laser Measurement for Enhanced Girth Welds Manufacturing and Fatigue Behavior." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49400.

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The paper describes the laser pipe end measurement systems developed by Tenaris to perform the automatic dimensional inspection of pipe ends (measuring OD, ID, WT) and the software’s applications which analyze the collected data. The measurements performed by the Laser End Measurement System (LEMS) can give great advantages to end users and laying companies allowing a more efficient pipe alignment prior welding. This is of particular importance in offshore oil recovery industry, where the fatigue requirements of pipelines subject to high dynamic loads are continuously increasing, as the exploitation is moving in harsh environments. Fatigue is normally the limiting design criterion for products like Steel Catenary Risers (SCRs) or fatigue sensitive flowlines, and it represents its major engineering challenge. One way to minimize the risks of girth welds’ fatigue failure is to minimize the pipes abutting Hi-Lo [1,2]. This task could be accomplished by the use of laser pipe ends measurements analyses in conjunction with dedicated software. This paper provides details on the implementation and validation processes of automatic measurement systems (fixed and portable) to determine pipe ends dimensions with precision and repeatability. In addition, the features and the capabilities of the fit-for-purpose to the end user automatic applications are showed. These features include the Best Matching (search of the alignments which minimize pipes abutting Hi-Lo), the Counter-Boring (analysis of the best ID/OD to which machine the pipe ends counter-bore and of the forecast of the machined WT after counter boring), and the sorting in families (determination of pipes groups according to their ID/WT/OD tolerances).
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Liang, Lin, Ting Lei, and Matthew Blyth. "AUTOMATIC LOGGING-WHILE-DRILLING DIPOLE SONIC SHEAR PROCESSING ENABLED BY PHYSICS-DRIVEN MACHINE LEARNING." In 2021 SPWLA 62nd Annual Logging Symposium Online. Society of Petrophysicists and Well Log Analysts, 2021. http://dx.doi.org/10.30632/spwla-2021-0059.

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Logging-while-drilling (LWD) dipole sonic tools have been introduced to the industry as a supplement to monopole and quadrupole measurement because they can provide shear slowness anisotropy, which is essential for formation characterization and well completion applications. Due to the presence of the collar, which acts as a strong waveguide, the recorded formation signal is significantly affected at low frequencies. Consequently, an automated interpretation of LWD dipole sonic data re-mains a challenge. The traditional dispersive semblance-based method requires accurate estimates of parameters such as borehole size and/or mud slowness to avoid bias in the dispersion model used in the processing. Recently, a frequency-slowness domain inversion scheme has been developed that can invert for both the formation shear slowness and mud slowness by minimizing the guidance-mismatch cost function. However, this method uses an isotropic dispersion model and requires selecting narrow-band dispersion data in the low-frequency range with good-quality, which can limit the range of applicability of the method and also requires user input through-out the process. We have previously developed a physics-driven machine learning-based method to enhance the interpretation of wireline dipole sonic data. However, the LWD scenario introduces additional complexity. This work extends the method to support the interpretation of LWD dipole sonic. An anisotropic root-finding mode-search algorithm is first used to generate extensive synthetic formation flexural dispersion curves that can match dispersion measurements in strong anisotropic formations in high-angle and horizontal wells, with a known tool model. Special care needs to be taken to pick the formation flexural mode from several co-existing modes arising from the strong coupling between tool and formation. After quality control and verification, this comprehensive synthetic dataset is used to train a neural network model. We then develop an inversion-based algorithm, taking advantage of this efficient neural network model and combining it with a clustering algorithm, to reliably label and ex-tract the formation flexural mode, processed from either the modified Prony’s method, or a broadband dispersion analysis algorithm. The extraction around the formation flexural kick-in frequency is used for developing a quality control method. The strongest collar arrival, on the other hand, can be confidently removed due to the fundamental difference in its dispersion characteristics from the formation flexural mode. This novel method can automatically and efficiently label the formation flexural mode and simultaneously invert it for formation shear slowness together with other relevant parameters such as mud slowness without user intervention. Since this method is built upon an anisotropic model, it can be applied to the full frequency range of the data spectrum without the traditional isotropic model assumption. Additionally, the regression analysis of the inverted mud slownesses can further provide physical constraint to reduce uncertainties in the inverted shear slowness. The algorithm has been tested on field data showing good performance. It makes edge deployment possible so that LWD telemetry can be optimized to transmit the processed data to the surface in real-time, which is essential to leverage the advantages of the conveyance method.
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Kiray, B., O. S. Türkay, A. K. Tuğcu, and I. T. Sümer. "Suspension Design Optimization of a Washing Machine: Part II — Formulation and Implementation of Parametric Optimization." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0301.

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Abstract This paper presents an optimization methodology for determining the optimal suspension characteristics of an automatic washing machine. Earlier publications by the authors have presented the modeling and experimental validation of the suspension dynamics of a horizontal-axis washing machine. That machine was characterized by the horizontal tub being suspended by three springs and supported by two dry-friction absorbers. A companion paper (Part I) assessed the modeling and validation of a different washing machine where the horizontal tub stands on four shock absorbers. In this paper (Part II) various formulations for the optimization of the suspension system introduced in Part I are described and implemented by using a parametric grid optimization method. The primary objective of this effort is to determine the most suitable criteria that will be employed for future washing machine design optimization with different configurations. It is concluded that a weighted multiobjective function subject to washing machine cabinet motion constraint is appropriate for this purpose. Future work will be toward the employment of an analytical optimization methodology in order to develop a complete design software that will be used by washing machine suspension design engineers.
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Pekoll, Oskar-H. "Upside Down: Historic Tram Goes Underground – an Infrastructure Challenge on the Way to a Modern City." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0074.

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&lt;p&gt;To deal with the high volume of traffic in the historic city center of Karlsruhe (Germany), the track system of the historic surface tram is moved underground.&lt;/p&gt;&lt;p&gt;First, seven underground stations are built, which are then connected by using a tunnel boring machine for excavation of the tracks. While the traffic continues on the surface, the new underground stations are being built in sections using the dig-and-cast construction method. Due to the high ground water level bore piles and diaphragm walls of reinforced concrete / concrete cut-off wall are used as excavation pit shoring. A grouted sealing blanket made using jet grouting processes serves as horizontal blanket.&lt;/p&gt;&lt;p&gt;The cover is made while the traffic continues overhead, to this end traffic routing of road and tram traffic is altered in several stages of construction. The subsequent removal of the soil is realized via this newly created tunnel system – this way no truck traffic has to pass through the city center.&lt;/p&gt;&lt;p&gt;The construction is a challenge to permit a limitation of the deformations in relation to the settlement of the immediately adjacent historic buildings and also in the logistics of the construction while keeping the traffic above ground running.&lt;/p&gt;
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Reports on the topic "Automatic horizontal boring machine"

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Operator killed when horizontal auger boring machine overturned. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2013. http://dx.doi.org/10.26616/nioshsface11ny043.

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Operator of horizontal boring machine is crushed to death. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2001. http://dx.doi.org/10.26616/nioshsface00ia003.

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