Abstract With the increasing demand for high‐performance damping rubber material in various fields, improving performance of existing nonpolar has garnered tremendous scientific and industrial interest. However, it remains a long‐standing challenge to improve properties materials due their low intrinsic glass transition temperature ( T g ) incompatible surface energy with high‐damping polar polymers or fillers. To solve this conundrum, ultra‐low gel multifunctional carboxy‐functional high...

Silica, as a high-quality reinforcing filler, can satisfy the requirements of high-performance green tread rubber with high wet-skid resistance, low rolling and heat generation. However, silica surface contains abundant silicon hydroxyl groups, resulting in severe aggregation particles non-polar matrix. Herein, we explored carbon black (CB)/silica hybrid strategy to prepare epoxidized natural (ENR)-based vulcanizates. Benefiting from reaction interaction between epoxy groups on ENR chains...

Optimal quasi-periOdic preventive maintenance pOlicies fOr a repairable system with stOchastic interval Optymalna strategia quasi-OkresOwej kOnserwacji zapObiegawczej systemu naprawialnegO -czas między przeglądami jakO wielkOść stOchastycznaThe usual (PM) of is done before failure at integer multiples time T. In some real cases, PM cannot be performed as soon planned period reached because effects random factors, while it usually within an implemented period, and thus makes the become...

The high-quality BaTiO3 and Zn-doped thin films were prepared on Si substrates by choosing the suitable raw materials optimizing preparation of post process annealing. Through characterization technique x-ray diffraction (XRD) atomic force microscope (AFM), influences different doping levels was discussed sizes, shapes uniformities respectively. Raman spectra measurements carried out to study lattice vibration modes films. Meanwhile, type dopant occupied site in also detail. For...

Periodic inspection policy is performed for some degradation systems to check their states, whereas it usually difficult implement on time due impact of random factors. Inspections and maintenance actions are implemented in an window with random, thus how optimize the windows threshold system perform preventive (PM) beneficial practice. To this end, optimisation quasiperiodic PM proposed a whose followed Wiener process linear drift. Assume that can change rate inspections randomly each...

With the increasing demands for environmental friendliness, bio-based additives in rubber materials have attracted extensive research attention from academy and industry. However, low molecular weight high polarity are detrimental to mixing compatibility with materials. In this work, we prepare a phenol-functionalized 1,2-PB (1,2-PB-g-CA) by grafting cardanol onto 1,2-polybutadiene (1,2-PB) based on olefin metathesis. The 1,2-PB-g-CA demonstrate controlled number average 7 × 103 4 104 tuned...

Optimization of sequential preventive maintenance has been widely studied. However, some issues need further discussion when considering certain real factors. Hence, an policy for a mono-unit repairable system with windows is proposed. The load strength and catastrophic failures are considered in the reliability model, optimization SPM rigorously proven by analytical method. existence uniqueness optimal solution monotone increasing failure intensity function presented detail. proof theory...

Abstract Most of the Preventive maintenance (PM) reliability modeling research has focused on relationship between two adjacent failure intensity functions, while few real case studies have demonstrated application these PM models. Thinking from this vision, a nonlinear model with scale and shape adjustment parameters is proposed based Weibull distribution, can describe each effect. Meanwhile, separate influence an environmental factor function new system when it operates under condition....

In this article, we develop an extended geometric process model with a recovery factor and propose two-dimensional evaluation function for each maintenance effect. The developed can describe the mean inter-failure time which be improved by first or several former repairs in some repairable systems. We also parameter estimation methods use real failure datum to prove model’s application. Focused on model, two novel replacement policies their optimizations are presented detail. Then, case...

ABSTRACT Thermoplastic vulcanizate (TPV), with both rubber‐like elasticity and plastic‐like molding processing, suggests great potential in automobile manufacturing, medical equipment, aerospace, other fields. However, due to the poor rubber–plastic compatibility lack of functional elastomers, commercial TPV is mainly prepared based on ethylene propylene diene monomer/polypropylene (EPDM/PP) composites. Herein, we employed high vinyl polybutadiene rubber (HVBR) as phase PP plastic realize a...

ABSTRACT High‐damping rubber materials are essential for fabricating high‐performance green tires due to their distinct advantage of low noise and vibration, good auto‐braking, service life. However, the poor interfacial compatibility between common nonpolar tread polar polymers/fillers severely restricts development high‐damping composites. Herein, we prepared a multi‐functionalization high vinyl polybutadiene (MFHVBR) without gel formation by anionic reaction. This significantly enhanced...

This article has been retracted by the publisher.

Multi-unit parallel production system exists extensively in most enterprises, one repairman and spare unit are always matched to ensure the normal operation of system. However, it is a vital issue optimize preventive maintenance (PM) policy operating number under above condition. To this end, paper oriented multi-unit developed an optimization model that jointly considered PM number. In model, placed operational state during period preventively maintained. Then, numerical example some...

Dimensional variation analysis in multistation manufacturing processes (MMPs) is a challenging research topic with great practical significance. Researchers have been focused on constructing various mathematical models to identify the correlations among huge amounts of collected production data. However, current achieved insufficient insights into correlation laws due complexity data’s mutual relations. In this study, data-driven modeling method developed for deep data-mining and dimensional...

Abstract Preventive maintenance (PM) for multi-unit parallel system with limited production resource is a crucial issue. To find solution the issue, this study focused on one repairman and some spare units, developed an optimization model system. In model, PM policy cold unit number were jointly considered. After optimization, optimal interval of running obtained. Then, numerical example was analyzed to illustrate proposed results attained based sensitive analysis.