Results 51 to 60 of about 426 (207)

Identifying Physical Interactions in Contact‐Based Robot Manipulation for Learning from Demonstration

open access: yesAdvanced Robotics Research, EarlyView.
Robots can learn manipulation tasks from human demonstrations. This work proposes a versatile method to identify the physical interactions that occur in a demonstration, such as sequences of different contacts and interactions with mechanical constraints.
Alex Harm Gert‐Jan Overbeek   +3 more
wiley   +1 more source

Impact noise test method using a modified hammer machine [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1975
The current national (ASTM E-492) and international (ISO-R140/R717) impact method involves the use of a standard hammer machine for evaluating the impact noise isolation of floor/ceiling structure. The method has been severely criticized on the ground that ratings based on the test data correlate poorly with the subjective judgments of people listening
openaire   +1 more source

Comparative Shear Tests of Bolt Rods Under Static and Dynamic Loading

open access: yesStudia Geotechnica et Mechanica, 2020
This article presents the methodology and results of single shear tests of bolt rods under dynamic impact loading generated by means of a drop hammer. Comparative analysis was also performed for bolt rod load capacity, stress and shear work under static ...
Pytlik Andrzej
doaj   +1 more source

Durability of Soft Pneumatic Actuators: A Review and Benchmarking Protocol

open access: yesAdvanced Robotics Research, EarlyView.
Lack of durability is a key challenge hindering the broad scale adoption of soft pneumatic actuators (SPAs) in automation industries. This review provides a comprehensive overview of existing research on SPA durability, introduces a standardized durability benchmarking protocol to consolidate the testing of SPAs, and outlines promising directions for ...
Dickson Chiu Yu Wong   +2 more
wiley   +1 more source

Experimental study on dynamic and static performance of a new type of pressure-absorbing energy bolt system

open access: yesAIP Advances, 2021
Rock burst support of deep rock mass has always been a difficult problem in geotechnical engineering. Aiming at the problem of rock burst in deep rock mass, a new type of pressure yielding and energy-absorbing bolt system is designed in this paper.
Yi Zhang   +5 more
doaj   +1 more source

FiN‐Kiri: Fabric‐Based Inflatable Kirigami Actuator for Multimodal Soft Robots

open access: yesAdvanced Robotics Research, EarlyView.
This study introduces a type of inflatable fabric‐based kirigami actuator capable of performing bending motion. The actuator is utilized as soft grippers, a crawling robot and a swimming robot. The crawling robot demonstrated extraordinary motion capabilities, such as moving forward, turning and navigating a narrow tunnel.
Yang Yu   +12 more
wiley   +1 more source

Low-velocity impact response of a novel bionic turtle shell back armor sandwich structure

open access: yesJournal of Materials Research and Technology
Turtle shell dorsal armor comprises a typical lightweight laminated composite structural material, which is constructed by cuticle and bone layer, with high specific strength and high fracture toughness.
Di Zhang   +4 more
doaj   +1 more source

Cross Kingdom Metabolic Engineering Paradigm Elevating Sustainable Protein Production

open access: yesAdvanced Science, EarlyView.
ABSTRACT Confronting the dual crisis of escalating global protein demand and unsustainable agriculture necessitates transformative solutions. Here, we pioneer evolutionary insights from maize nitrogen optimization via asparagine synthetase (ASNS) to rewire metabolism in Pichia pastoris.
Yuanyuan Du   +4 more
wiley   +1 more source

Structural Design and Motion Behavior Analysis of Composite Percussion Drilling Tool

open access: yesShiyou jixie, 2019
The high strength, poor drillability and strong breaking-resistance of deep complex hard formation rocks often result in stick-slip vibration and premature wear of the PDC bit.
Wang Wei   +4 more
doaj  

Assessing the Acetabular Cup Implant Primary Stability by Impact Analyses: A Cadaveric Study. [PDF]

open access: yesPLoS ONE, 2016
BACKGROUND:The primary stability of the acetabular cup (AC) implant is an important determinant for the long term success of cementless hip surgery. However, it remains difficult to assess the AC implant stability due to the complex nature of the bone ...
Adrien Michel   +4 more
doaj   +1 more source

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