scholarly journals Curved display based on programming origami tessellations

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Yang Deng ◽  
Weixuan Liu ◽  
Yik Kin Cheung ◽  
Yongkai Li ◽  
Wei Hong ◽  
...  
Keyword(s):  
Mass Production ◽  
Optimization Method ◽  
Circuit Boards ◽  
Next Generation ◽  
3D Display ◽  
Functional Optimization ◽  
Flexible Displays ◽  
Pick And Place ◽  
Curved Displays

AbstractCurved displays have recently become very popular, with wide applications for both industry and consumers. However, built upon initially flat films, most flexible displays are often incompatible with general nondevelopable surfaces. In this paper, we report a method for producing curved displays of nondevelopable shapes by using a structure-mechanics-inspired functional optimization method to design tessellation patterns that fold into the desired shapes. Representative displays in spherical and saddle shapes are demonstrated. The microfabrication process is employed for manufacturing 2D flexible foldable circuit boards, pick-and-place technology is used for placing illuminant elements onto the boards, and mold guidance is used for folding 2-D sheets into curved 3D display prototypes. The proposed technology is feasible for mass production and advances the application of next-generation curved displays.

scholarly journals Next Generation Industrial IoT Digitalization for Traceability in Metal Manufacturing Industry: A Case Study of Industry 4.0

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 628
Author(s):  
Michail J. Beliatis ◽  
Kasper Jensen ◽  
Lars Ellegaard ◽  
Annabeth Aagaard ◽  
Mirko Presser
Keyword(s):  
Industry 4.0 ◽  
Manufacturing Industry ◽  
Careful Consideration ◽  
Added Value ◽  
Shop Floor ◽  
Circuit Boards ◽  
Next Generation ◽  
Road Map ◽  
Industrial Iot ◽  
Production Cycles

This paper investigates digital traceability technologies taking careful consideration of the company’s needs to improve the traceability of products at the production of GPV Group as well as the efficiency and added value in their production cycles. GPV is primarily an electronics manufacturing service company (EMS) that manufactures electronic circuit boards, in addition to big metal products at their mechanics manufacturing sites. The company aims to embrace the next generation IoT technologies such as digital traceability in their internal supply chain at manufacturing sites in order to stay compatible with the Industry 4.0 requirements. In this paper, the capabilities of suitable digital traceability technologies are screened together with the actual GPV needs to determine if deployment of such technologies would benefit GPV shop floor operations and can solve the issues they face due to a lack of traceability. The traceability term refers to tracking the geolocation of products throughout the manufacturing steps and how that functionality can foster further optimization of the manufacturing processes. The paper focuses on comparing different IoT technologies and analyze their positive and negative attributes to identify a suitable technological solution for product traceability in the metal manufacturing industry. Finally, the paper proposes a suitable implementation road map for GPV, which can also be adopted from other metal manufacturing industries to deploy Industry 4.0 traceability at shop floor level.

Study on Vibration and Damping of Printed Circuit Boards Treated with Partial Constrained Damping Layer

2014 ◽  
Vol 1049-1050 ◽  
pp. 590-594
Author(s):  
Xiao Dong Zhou ◽  
Chang Wu Xiong
Keyword(s):  
Printed Circuit Boards ◽  
Optimization Method ◽  
Vibration Response ◽  
Good Effect ◽  
Experimental Investigations ◽  
Constrained Layer Damping ◽  
Circuit Boards ◽  
Vibration System ◽  
Printed Circuit ◽  
Constrained Damping

Constrained damping layer (CDL) treatment has been an effective way to suppress vibration level of various structures. by introducing this method into the vibration control system of electronic equipments, this paper firstly discussed the dominant mechanism difference between free damping layer treatment and constrained damping layer treatment, Then base on the constrained layer damping layout optimization method in the vibration system of a rectangle thin board like PCB, a series of experimental investigations were presented on the vibration response of printed circuit boards treated with partial constrained damping layers. as a result, it proves the CDL treatment having good effect on vibration response control of PCBs.

RMS

2010 ◽  
pp. 52-60
Author(s):  
Vasdev Malhotra ◽  
Tilak Raj ◽  
Ashok Kumar
Keyword(s):  
Pervasive Computing ◽  
Mass Production ◽  
Manufacturing Systems ◽  
Life Cycles ◽  
Reconfigurable Manufacturing Systems ◽  
Reconfigurable Manufacturing ◽  
Next Generation ◽  
Research Issues ◽  
Manufacturing Operations ◽  
Production Techniques

Today, markets increasingly require more customized products, with shorter life cycles. In response, manufacturing systems have evolved from mass production techniques to the ?exible automation. This paper argues that manufacturing systems of the next generation will have to incorporate more ?exibility and intelligence, evolving towards recon?gurable manufacturing systems. In particular, the concept of intelligence becomes more relevant because of the need to maintain e?ective and e?cient manufacturing operations with minimum downtime under conditions of uncertainty. This chapter presents some research issues related to the development of reconfigurable manufacturing systems with pervasive computing.

Efficient hybrid group search optimizer for assembling printed circuit boards

2018 ◽  
Vol 33 (03) ◽  
pp. 259-274
Author(s):  
Cheng-Jian Lin ◽  
Mei-Ling Huang
Keyword(s):  
Printed Circuit Boards ◽  
Population Diversity ◽  
Nearest Neighbor Search ◽  
Circuit Boards ◽  
Research Attention ◽  
Assembly Time ◽  
Printed Circuit ◽  
Pick And Place ◽  
Group Search ◽  
Hybrid Group

AbstractAssembly optimization of printed circuit boards (PCBs) has received considerable research attention because of efforts to improve productivity. Researchers have simplified complexities associated with PCB assembly; however, they have overlooked hardware constraints, such as pick-and-place restrictions and simultaneous pickup restrictions. In this study, a hybrid group search optimizer (HGSO) was proposed. Assembly optimization of PCBs for a multihead placement machine is segmented into three problems: the (1) auto nozzle changer (ANC) assembly problem, (2) nozzle setup problem, and (3) component pick-and-place sequence problem. The proposed HGSO proportionally applies a modified group search optimizer (MGSO), random-key integer programming, and assigned number of nozzles to an ANC to solve the component picking problem and minimize the number of nozzle changes, and the place order is treated as a traveling salesman problem. Nearest neighbor search is used to generate an initial place order, which is then improved using a 2-opt method, where chaos local search and a population manager improve efficiency and population diversity to minimize total assembly time. To evaluate the performance of the proposed HGSO, real-time PCB data from a plant were examined and compared with data obtained by an onsite engineer and from other related studies. The results revealed that the proposed HGSO has the lowest total assembly time, and it can be widely employed in general multihead placement machines.

Robust Optimum Design of Fluid Dynamic Bearing for 2.5 Inch HDD Using Statistical Method

2011 ◽  
Author(s):  
Hiromu Hashimoto ◽  
Masayuki Ochiai ◽  
Yuta Sunami
Keyword(s):  
Production Process ◽  
Statistical Method ◽  
Optimum Design ◽  
Mass Production ◽  
Fluid Dynamic ◽  
Optimization Method ◽  
Manufacturing Errors ◽  
Fluid Dynamic Bearing ◽  
Robust Optimum Design

This paper describes the application of robust optimum design using the statistical method to the design of fluid dynamic bearings used for HDD spindle motors. Fluid dynamic bearings for HDD spindle motors are very small and generally manufactured by mass production process. Therefore, the bearings are demanded to easily manufacture the bearings and expected an insensitive design of the bearing which mean having low variability of bearing characteristics towards manufacturing errors. Hence, in this paper, the influence of bearing characteristics upon the occurrence of the manufacturing errors is conducted using the statistical method. As a result, the bearing with low variability of bearing characteristics can be obtained with the application of the new optimization method with the consideration of dimensional tolerances.

scholarly journals Genetic divergence in biomass sorghum genotypes through agronomic and physical-chemical characters

2020 ◽  
Vol 9 (9) ◽  
pp. e552997536
Author(s):  
Taiana Paula Streck Vendruscolo ◽  
Valvenarg Pereira da Silva ◽  
Rafhael Felipin-Azevedo ◽  
Raiane Scandiane da Silva ◽  
Marcilene Alves de Souza Castrillon ◽  
...  
Keyword(s):  
Mass Production ◽  
Genetic Divergence ◽  
Dimensional Space ◽  
Optimization Method ◽  
Dry Mass ◽  
Canonical Variables ◽  
Relative Contribution ◽  
Physical Chemical ◽  
Chemical Characters

The present research aimed to evaluate the genetic divergence in 34 sorghum biomass genotypes via agronomic and physicochemical characters. The design used was randomized blocks with three replications. The agronomic and physical-chemical characteristics evaluated were: days for flowering, number of stems, plant height, number of leaves, green mass production, dry mass production, determination of total ash, determination of volatile content, insoluble lignin and determination of fixed carbon content. The data were submitted to analysis of variance and then, to estimate divergence, the generalized Mahalanobis distance was used as a measure of dissimilarity. Based on this matrix, the methods of Tocher's optimization clusters and the Hierarchical method of Average Grouping Between Groups (UPGMA) were used, and analysis of canonical variables, and the projection based on the first two canonical variables arranged in two-dimensional space. Singh criterion was also used to quantify the relative contribution of these characteristics to genetic divergence. The evaluated genotypes showed significant differences for all the evaluated characteristics. The combination between the 201429B001 and 201429B028 (394.98) genotype pairs was the most divergent and the combination between the 201429B015 and 201429B031 (6.31) genotypes was the most similar. The grouping generated by the Tocher Optimization method, hierarchical UPGMA and graphical dispersion showed similarity in the grouping of genotypes. The first two canonical variables were sufficient to explain about 81.78% of the total variation observed. The results showed a wide genetic diversity among the 34 genotypes of sorghum biomass.

Topology Optimization and Prototype of a Three-Dimensional Printed Compliant Finger for Grasping Vulnerable Objects With Size and Shape Variations

2018 ◽  
Vol 10 (4) ◽  
Author(s):  
Chih-Hsing Liu ◽  
Chen-Hua Chiu ◽  
Ta-Lun Chen ◽  
Tzu-Yang Pai ◽  
Mao-Cheng Hsu ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Industrial Robot ◽  
Low Cost ◽  
Three Dimensional ◽  
Optimization Method ◽  
Size And Shape ◽  
Flexible Filament ◽  
Pick And Place ◽  
Robotic Automation ◽  
Topology Optimization Method

This study presents a topology optimization method to synthesize an innovative compliant finger for grasping objects with size and shape variations. The design domain of the compliant finger is a trapezoidal area with one input and two output ports. The topology optimized finger design is prototyped by three-dimensional (3D) printing using flexible filament, and be used in the developed gripper module, which consists of one actuator and two identical compliant fingers. Both fingers are actuated by one displacement input, and can grip objects through elastic deformation. The gripper module is mounted on an industrial robot to pick and place a variety of objects to demonstrate the effectiveness of the proposed design. The results show that the developed compliant finger can be used to handle vulnerable objects without causing damage to the surface of grasped items. The proposed compliant finger is a monolithic and low-cost design, which can be used to resolve the challenge issue for robotic automation of irregular and vulnerable objects.

Sign in / Sign up

Export Citation Format

Share Document