Abstract Nylon cord rubber has the advantages of small residual deformation and is easy to lift lower tubing string in low-permeability oil gas reservoirs. However, it associated with low-pressure resistance poor sealing performance. To enhance performance nylon rubber, a three-dimensional numerical model was established its accuracy experimentally determined. The Plackett–Burman test, Steepest...

This research aims to develop an automatic tubing-grafting robotic system using soft rubber tubes as the grafting material that is suitable for the rootstock and scion of fruit-bearing vegetables having similar stem diameter, such as tomato, bitter melon, sweet pepper, etc. The experimental results indicated that the average grafting success rate is over 93.8% and the system has a working capab...

Steel-reinforced elastomeric isolators (SREIs) are considerably more expensive than unbonded steel-reinforced elastomeric bearings like those typically used in bridge applications to accommodate thermal expansion/contraction of the bridge deck. SREIs are vulcanized to thick steel end-plates (25 mm or thicker) that are bolted to the supports, while unbonded elastomeric bearings do not have thick...