Whilst industrial robots have been widely used in many industrial sectors, they are predominantly used in a structured factory environment. In recent years, off-site robotics have been investigated extensively and the...Whilst industrial robots have been widely used in many industrial sectors, they are predominantly used in a structured factory environment. In recent years, off-site robotics have been investigated extensively and there are some promising candidates emerging. One such category of robots is exoskeleton robots and this paper provides an in-depth assessment of their suitability in assisting human operators in undertaking manual operations typically found in the construction industry. This work aims to objectively assess the advantages and disadvantages of these two suits and provide recommendations for further improvements of similar system designs. The paper focuses on the passive exoskeleton robotic suits which are commercially available. Three types of activities are designed and a mechatronic methodology has been designed and implemented to capture visual data in order to assess these systems in comparison with normal human operations. The study suggests that these passive suits do reduce the effort required by human operators to undertake the same construction tasks as evidenced by the results from one focused study, though a number of improvements could be made to improve their performance for wider adoption.展开更多
3D printing of cementitious material can provide an affordable,sustainable,and optimized approach for the construction of homes,without compromising quality or craftsmanship.While most of the current research and deve...3D printing of cementitious material can provide an affordable,sustainable,and optimized approach for the construction of homes,without compromising quality or craftsmanship.While most of the current research and development efforts in this field are focused on cement-based concrete printing,this paper focuses on the current state-of-the-art literature review of designing and developing a sustainable clay-based mixture design that mainly includes clay,sand,straw,lime,and water.The goal of this paper is to bridge the gap between typical traditional earth construction,specifically cob construction,and emerging 3D printing of cementitious materials.The specific objective of this paper is to offer some possible changes in the typical cob mixture so that it can be used for 3D printing of clay-based mixtures with sufficient flowability,buildability,strength,and open time(i.e.,the time period between printing of one layer and printing of another layer deposited on a layer below).The paper describes typical clay-based mixtures and their traditional process and then specifies the challenges in going from traditional cob construction to advanced computer-controlled robotic 3D printing.展开更多
文摘Whilst industrial robots have been widely used in many industrial sectors, they are predominantly used in a structured factory environment. In recent years, off-site robotics have been investigated extensively and there are some promising candidates emerging. One such category of robots is exoskeleton robots and this paper provides an in-depth assessment of their suitability in assisting human operators in undertaking manual operations typically found in the construction industry. This work aims to objectively assess the advantages and disadvantages of these two suits and provide recommendations for further improvements of similar system designs. The paper focuses on the passive exoskeleton robotic suits which are commercially available. Three types of activities are designed and a mechatronic methodology has been designed and implemented to capture visual data in order to assess these systems in comparison with normal human operations. The study suggests that these passive suits do reduce the effort required by human operators to undertake the same construction tasks as evidenced by the results from one focused study, though a number of improvements could be made to improve their performance for wider adoption.
文摘3D printing of cementitious material can provide an affordable,sustainable,and optimized approach for the construction of homes,without compromising quality or craftsmanship.While most of the current research and development efforts in this field are focused on cement-based concrete printing,this paper focuses on the current state-of-the-art literature review of designing and developing a sustainable clay-based mixture design that mainly includes clay,sand,straw,lime,and water.The goal of this paper is to bridge the gap between typical traditional earth construction,specifically cob construction,and emerging 3D printing of cementitious materials.The specific objective of this paper is to offer some possible changes in the typical cob mixture so that it can be used for 3D printing of clay-based mixtures with sufficient flowability,buildability,strength,and open time(i.e.,the time period between printing of one layer and printing of another layer deposited on a layer below).The paper describes typical clay-based mixtures and their traditional process and then specifies the challenges in going from traditional cob construction to advanced computer-controlled robotic 3D printing.
