Results 91 to 100 of about 118,386 (326)

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

3D concrete printing using computational fluid dynamics: Modeling of material extrusion with slip boundaries

Journal of Manufacturing Processes
This paper investigates the role of slip boundary conditions in computational fluid dynamics modeling of material extrusion and layer deposition during 3D concrete printing.
K. El Abbaoui, I. Al Korachi, M. El Jai, Berin Šeta, M. Mollah   +4 more
semanticscholar   +1 more source

Synthesis and characterization of one-part geopolymers for extrusion based 3D concrete printing

Journal of Cleaner Production, 2019
Interest in innovative construction processes such as 3D concrete printing (i.e. digital construction), is growing rapidly both in academia and industry. Processing conventional geopolymer mixes, in which alkaline solutions are used for activation, could
B. Panda, G.V.P. Bhagath Singh, C. Unluer, M. Tan   +3 more
semanticscholar   +1 more source

A real-time height measurement and feedback system for 3D concrete printing

, 2017
Recent years have seen a rapid growth of additive manufacturing methods for concrete construction. Generally, these methods are based on a linear sequence of design → print path definition → actual printer actions in a print environment.
Salet, T.A.M., Hordijk, Dick A., van Strien, E.C.F., Lukovic, Mladena, Wolfs, R.J.M., Bos, F.P.   +5 more
core   +1 more source

ChicGrasp: Imitation‐Learning‐Based Customized Dual‐Jaw Gripper Control for Manipulation of Delicate, Irregular Bio‐Products

Advanced Robotics Research, EarlyView.
Automated poultry processing lines still rely on humans to lift slippery, easily bruised carcasses onto a shackle conveyor. Deformability, anatomical variance, and hygiene rules make conventional suction and scripted motions unreliable. We present ChicGrasp, an end‐to‐end hardware‐software co‐designed imitation learning framework, to offer a ...
Amirreza Davar, Zhengtong Xu, Siavash Mahmoudi, Pouya Sohrabipour, Chaitanya Pallerla, Yu She, Wan Shou, Philip Glen Crandall, Dongyi Wang   +8 more
wiley   +1 more source

Experimental exploration of metal cable as reinforcement in 3D printed concrete [PDF]

, 2017
The Material Deposition Method (MDM) is enjoying increasing attention as an additive method to create concrete mortar structures characterised by a high degree of form-freedom, a lack of geometrical repetition, and automated construction.
Ahmed, Z.Y., Theo Salet, Salet, TAM Theo, Evgeniy Jutinov, Jutinov, ER, Salet, T.A.M., Bos, FP Freek, Zeeshan Ahmed, Ahmed, ZY Zeeshan, Freek Bos, Bos, F.P., Jutinov, E.R.   +11 more
core   +1 more source

Research Progress of Concrete 3D Printing Technology and Its Equipment System, Material, and Molding Defect Control

Journal of Engineering, 2022
The traditional construction technology not only has environmental friendly problems such as noise and dust but also has resource-saving problems such as large template quantity and low construction accuracy.
Yanhua Zhao, Wei Meng, Peifu Wang, Dongqing Qian, Wei Cheng, Zhongqing Jia   +5 more
doaj   +1 more source

Effect of printing parameters in 3D concrete printing: Printing region and support structures [PDF]

Journal of Materials Processing Technology, 2019
Abstract 3D concrete printing can be used to build many complex structures. However, due to its material properties in the fresh state, it is difficult to construct overhanging structures without supports. In order to unleash the true capability of 3D concrete printing, a support structure is required to support any overhanging fresh material, which ...
Yi Wei Daniel Tay, Ming Yang Li, Ming Jen Tan   +2 more
openaire   +2 more sources

Systematic Exploration of 3D Concrete Printing Parameters for Conformal Printing on Sloped Surfaces

Advanced Robotics Research, EarlyView.
A conformal slicing algorithm is developed for robotic 3D concrete printing (3DCP) on sloped surfaces as a first step toward printing slab‐on‐grade foundations on uneven terrain. Systematic experiments quantify the effects of nozzle speed, extrusion rate, and toolpath direction on filament dimension and stability.
Paniz Farrokhsiar, Benay Gursoy, Jose Pinto Duarte   +2 more
wiley   +1 more source

Engineering Osteoimmune Responses with Functionalized Orthopedic Implants for Post‐Operative Osteosarcoma Treatment

Advanced Science, EarlyView.
Osteosarcoma is the most common primary bone tumor with limited treatment options and a terrible prognosis. This review provides a comprehensive summary of the recent development of osteoimmunomodulatory implants for post‐operative osteosarcoma treatment, of which the potential utility in evoking durable anti‐osteosarcoma immunity and accelerating bone
Yilong Dong, Lingshuang Wang, Hui Zhang, Menghuan Li, Zhong Luo, Yan Hu, Chunyuan Cai   +6 more
wiley   +1 more source