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double-deck grooves 1

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expandable electrical system 1

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mechanism design 1

rolling locomotion 1

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Design and locomotion analysis of two kinds of rolling expandable mobile linkages with a single degree

Yanlin HAO, Yaobin TIAN, Jianxu WU, Yezhuo LI, Yan-An YAO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 365-373 doi: 10.1007/s11465-020-0585-3

Abstract: Each robot is an essential multi-loop planar expandable linkage constructed by a concave outer loop and

Keywords： rolling locomotion     expandable mechanism     mechanism design     zero moment point (ZMP) analysis    

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Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 711-725 doi: 10.1007/s11465-021-0647-1

Abstract: To facilitate building a manipulator in the future, an expandable electrical system with a distributed

Keywords： stiffness actuator     variable stiffness module     drive module     symmetrical structure     double-deck grooves     expandable    

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Effective Green Porous Structural Adhesive for Thermal Insulating, Flame-Retardant, and Smoke-Suppressant Expandable Article

Meng-En Li, Hai-Bo Zhao, Jin-Bo Cheng, Ting Wang, Teng Fu, Ai-Ning Zhang, Yu-Zhong Wang

Engineering 2022, Volume 17, Issue 10,   Pages 151-160 doi: 10.1016/j.eng.2020.08.032

Abstract:

To develop an efficient way to overcome the contradiction among flame retardancy, smoke suppression, and thermal insulation in expanded polystyrene (EPS) foams, which are widely used insulation materials in buildings, a novel “green” porous bio-based flame-retardant starch (FRS) coating was designed from starch modified with phytic acid (PA) that simultaneously acts as both a flame retardant and an adhesive. This porous FRS coating has open pores, which, in combination with the closed cells formed by EPS beads, create a hierarchically porous structure in FRS–EPS that results in superior thermal insulation with a lower thermal conductivity of 27.0 mW‧(m·K)−1. The resultant FRS–EPS foam showed extremely low heat-release rates and smoke-production release, indicating excellent fire retardancy and smoke suppression. The specific optical density was as low as 121, which was 80.6% lower than that of neat EPS, at 624. The FRS–EPS also exhibited self-extinguishing behavior in vertical burning tests and had a high limiting oxygen index (LOI) value of 35.5%. More interestingly, after being burnt with an alcohol lamp for 30 min, the top side temperature of the FRS–EPS remained at only 140 °C with ignition, thereby exhibiting excellent fire resistance. Mechanism analysis confirmed the intumescent action of FRS, which forms a compact phosphorus-rich hybrid barrier, and the phosphorus-containing compounds that formed in the gas phase contributed to the excellent flame retardancy and smoke suppression of FRS–EPS. This novel porous biomass-based FRS system provides a promising strategy for fabricating polymer foams with excellent flame retardancy, smoke suppression, and thermal insulation.

Keywords： Biomass porous coating     Expanded polystyrene foam     Low thermal conductivity     Flame retardancy     Smoke suppression    

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Title Author Date Type Operation

Design and locomotion analysis of two kinds of rolling expandable mobile linkages with a single degree

Yanlin HAO, Yaobin TIAN, Jianxu WU, Yezhuo LI, Yan-An YAO

Journal Article

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Journal Article

Effective Green Porous Structural Adhesive for Thermal Insulating, Flame-Retardant, and Smoke-Suppressant Expandable

Meng-En Li, Hai-Bo Zhao, Jin-Bo Cheng, Ting Wang, Teng Fu, Ai-Ning Zhang, Yu-Zhong Wang

Journal Article

Guo Hongwei: Design of Large and Lightweight Space Expandable Mechanisms (2023-3-30)

26 Apr 2023

Conference Videos