scholarly journals Comparing Augmented Reality-Assisted Assembly Functions—A Case Study on Dougong Structure

2020 ◽  
Vol 10 (10) ◽  
pp. 3383 ◽  
Author(s):  
Chih-Hsing Chu ◽  
Chien-Jung Liao ◽  
Shu-Chiang Lin
Keyword(s):  
Augmented Reality ◽  
Assembly Process ◽  
Functional Design ◽  
Complex Objects ◽  
Manual Assembly ◽  
Scale Models ◽  
Architectural Innovation ◽  
Assembly Instructions

The Dougong structure is an ancient architectural innovation of the East. Its construction method is complex and challenging to understand from drawings. Scale models were developed to preserve this culturally-unique architectural technique by learning through their assembly process. In this work, augmented reality (AR)-based systems that support the manual assembly of the Dougong models with instant interactions were developed. The first objective was to design new AR-assisted functions that overcome existing limitations of paper-based assembly instructions. The second one was to clarify whether or not and how AR can improve the operational efficiency or quality of the manual assembly process through experiments. The experimental data were analyzed with both qualitative and quantitative measures to evaluate the assembly efficiency, accuracy, and workload of these functions. The results revealed essential requirements for improving the functional design of the systems. They also showed the potential of AR as an effective human interfacing technology for assisting the manual assembly of complex objects.

scholarly journals Design of on-line system for measuring and tracking time of assembly

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Katarína Senderská ◽  
Albert Mareš ◽  
Emil Evin
Keyword(s):  
Assembly Process ◽  
Manual Assembly ◽  
Line System ◽  
Proposed Model ◽  
On Line ◽  
Tracking Time ◽  
Work Done ◽  
Line Analysis

Abstract Manual assembly performed at assembly workstations nowadays still has a unique place in different kinds of production. To increase the productivity and quality of manual assembly it is necessary to analyse the existing workplaces and find ways to improve and streamline work done at these workplaces. The article deals with the design of a model for on-line analysis of a manual assembly process. The proposed model is based on the use of sensors or the so-called button-box and the use of software for recording and evaluating data. Based on the obtained data it is then possible to evaluate the time characteristics of the assembly process, aswell as to find sources of delays and mistakes and then take appropriate action to correct them.

scholarly journals Edge Computing Driven Scene-aware Intelligent Augmented Reality for Manual Assembly

2021 ◽  
Author(s):  
Mingyu Fu ◽  
Wei Fang ◽  
Shan Gao ◽  
Jianhao Hong ◽  
Yizhou Chen
Keyword(s):  
Augmented Reality ◽  
Cognitive Load ◽  
High Efficiency ◽  
Computing System ◽  
Edge Computing ◽  
Assembly Process ◽  
Manual Assembly ◽  
Worker Center ◽  
Assembly Operations ◽  
Assembly Tasks

Abstract Wearable augmented reality (AR) can superimpose virtual models or annotation on real scenes, and which can be utilized in assembly tasks and resulted in high-efficiency and error-avoided manual operations. Nevertheless, most of existing AR-aided assembly operations are based on the predefined visual instruction step-by-step, lacking scene-aware generation for the assembly assistance. To facilitate a friendly AR-aided assembly process, this paper proposed an Edge Computing driven Scene-aware Intelligent AR Assembly (EC-SIARA) system, and smart and worker-centered assistance is available to provide intuitive visual guidance with less cognitive load. In beginning, the connection between the wearable AR glasses and edge computing system is established, which can alleviate the computation burden for the resource-constraint wearable AR glasses, resulting in a high-efficiency deep learning module for scene awareness during the manual assembly process. And then, based on context understanding of the current assembly status, the corresponding augmented instructions can be triggered accordingly, avoiding the operator’s cognitive load to strictly follow the predefined procedure. Finally, quantitative and qualitative experiments are carried out to evaluate the EC-SIARA system, and experimental results show that the proposed method can realize a worker-center AR assembly process, which can improve the assembly efficiency and reduce the occurrence of assembly errors effectively.

Using Delmia V5 for Human Activity Improvement in an Assembly Line Production

2014 ◽  
Vol 657 ◽  
pp. 353-358 ◽  
Author(s):  
Rares Adrian Ghinea ◽  
Daniela Popescu ◽  
Călin Neamțu ◽  
Dan Hurgoiu ◽  
Florin Popister
Keyword(s):  
Virtual Environment ◽  
Human Activity ◽  
Manufacturing Industry ◽  
Assembly Line ◽  
Pneumatic Actuator ◽  
Assembly Process ◽  
Manual Assembly ◽  
Line Production ◽  
Simulation And Optimization

This paper presents a methodology for the simulation and optimization in a virtual environment of a manual assembly process. For validation of the methodology the authors chose an assembly process that is already used in the manufacturing industry. In the first step of the proposed methodology the existing process is simulated and then based on the simulation the activities and equipment involved are being analyzed and in the next step the assembly process is to be optimized using simulation and a series of modification vectors such as: layout, devices, tools and movement sequences. The case study presented in the paper aims to optimize the assembly process of a pneumatic actuator of a butterfly type valve.

scholarly journals Augmented Reality Application for Laptop Assembly with Assembly Complexity Study

2021 ◽  
Author(s):  
Chiew Jin Hong ◽  
Aun Naa Aun Sung
Keyword(s):  
User Interface ◽  
Speech Recognition ◽  
Augmented Reality ◽  
3D Models ◽  
Assembly Process ◽  
Assembly Sequence ◽  
Augmented Reality Application ◽  
Assembly Instructions ◽  
Guided Assembly ◽  
High Level

Abstract Augmented Reality (AR) in the assembly process will improve the user's experience by providing interactive instructions in real time. However, no previous application of AR guided assembly for laptops with a high level of assembly complexity has been developed. The research aims to develop an AR guided assembly application to provide instruction on the assembly of a laptop. The assembly complexity of the laptop was also investigated. The development of the AR application involves the creation of model target, 3D models and animations, and the development of user interface. The laptop assembly consists of ten steps. Each step comprises animated 3D models and text detailing the assembly instructions. Speech recognition has been used to navigate the assembly sequence. The AR application has successfully been developed for laptop assembly with an assembly complexity of 6.63. With the developed application, the performance of the laptop assembly can be accelerated.

scholarly journals The impact of smart technologies: A case study on the efficiency of the manual assembly process

Procedia CIRP ◽  
2021 ◽  
Vol 97 ◽  
pp. 412-417
Author(s):  
Maja Turk ◽  
Matevž Resman ◽  
Niko Herakovič
Keyword(s):  
Assembly Process ◽  
Manual Assembly ◽  
Smart Technologies ◽  
The Impact

Assembly variation analysis of the aircraft panel in multi-stage assembly process with N-2-1 locating scheme

2019 ◽  
Vol 233 (19-20) ◽  
pp. 6754-6773 ◽  
Author(s):  
Cong Lu ◽  
Deng-Sheng Huo ◽  
Zi-Yue Wang
Keyword(s):  
Contact Force ◽  
Assembly Process ◽  
Variation Analysis ◽  
Assembly Quality ◽  
Aircraft Fuselage ◽  
Multi Stage ◽  
Assembly Accuracy ◽  
Flexible Panel

The flexible aircraft panel parts are easy to deform during the assembly process, the deformation can directly affect the assembly accuracy of the aircraft panel, and further affect the assembly quality of the aircraft fuselage. In order to evaluate the assembly accuracy of the aircraft panel in multi-stage assembly process with N-2-1 locating scheme, this paper proposes an assembly variation analyzing approach, considering the effect of the contact force between the panel skin and the fixture components on the deformation of the panel in the assembly process. The mathematical models are established to conclude the contact force between the panel skin and the fixture components in multi-stage assembly process of the panel with N-2-1 locating scheme, and the effect of the contact force between the skin and the fixture components on the deformation of the panel in assembly is investigated. An assembly variation model is built for the aircraft panel considering the variation sources including the manufacturing error of the flexible panel parts, fixture error, and the deformation of the panel in multi-stage assembly process considering the effect of the contact force. Finally, the proposed assembly variation analyzing approach for the aircraft panel is tested with a case study.

Misophonia: An Evidence-Based Case Report

2020 ◽  
Vol 29 (4) ◽  
pp. 685-690
Author(s):  
C. S. Vanaja ◽  
Miriam Soni Abigail
Keyword(s):  
Quality Of Life ◽  
Case Report ◽  
Case History ◽  
Pure Tone ◽  
Physiological Responses ◽  
Evidence Based ◽  
Management Option ◽  
Pure Tone Audiogram

Purpose Misophonia is a sound tolerance disorder condition in certain sounds that trigger intense emotional or physiological responses. While some persons may experience misophonia, a few patients suffer from misophonia. However, there is a dearth of literature on audiological assessment and management of persons with misophonia. The purpose of this report is to discuss the assessment of misophonia and highlight the management option that helped a patient with misophonia. Method A case study of a 26-year-old woman with the complaint of decreased tolerance to specific sounds affecting quality of life is reported. Audiological assessment differentiated misophonia from hyperacusis. Management included retraining counseling as well as desensitization and habituation therapy based on the principles described by P. J. Jastreboff and Jastreboff (2014). A misophonia questionnaire was administered at regular intervals to monitor the effectiveness of therapy. Results A detailed case history and audiological evaluations including pure-tone audiogram and Johnson Hyperacusis Index revealed the presence of misophonia. The patient benefitted from intervention, and the scores of the misophonia questionnaire indicated a decrease in the severity of the problem. Conclusions It is important to differentially diagnose misophonia and hyperacusis in persons with sound tolerance disorders. Retraining counseling as well as desensitization and habituation therapy can help patients who suffer from misophonia.

Chronic Refractory Cough: A Case Study

2017 ◽  
Vol 2 (3) ◽  
pp. 57-62
Author(s):  
Anna Maria Siciliano
Keyword(s):  
Quality Of Life ◽  
Adult Female ◽  
Chronic Cough ◽  
Treatment Regime ◽  
Speech Language Pathology ◽  
Old Adult ◽  
Language Pathology

This paper presents a successful behavioral case study in treatment of chronic refractory cough in a 60-year-old adult female. The efficacy for speech-language pathology treating chronic cough is discussed along with description of treatment regime. Discussion focuses on therapy approaches used and the patient's report of changes in quality of life and frequency, duration, and severity reduction of her cough after treatment.

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