Particle-reinforced titanium matrix composites (PTMCs) have recently become popular in the field of metal composite research because their outstanding mechanical properties. However, diffuse distribution strong reinforcing phases within a material influences chip formation, resulting tool wear and lower cutting performance during machining. Examining formation mechanism PTMCs is crucial for enhancing machining performance. This paper explored how particles affect process orthogonal by...

Abstract Carbon fiber‐reinforced polymer composites are susceptible to damage in practical applications, and their repair has attracted significant attention. In this study, an electric heating (EHR) method was proposed for repairing fatigue of short carbon (SCFRPCs), leveraging the intrinsic electrothermal effect SCFRPCs. First, EHR evaluated through mechanical testing, both tensile strength fracture toughness SCFRPCs were improved after EHR. The temperature specimens reached approximately...

The electrical properties of conductive polymer composites are critical in applications, and the conductivity regulation through micro/nanofiller orientation is attracting broad attention. For short carbon fiber (SCF) (SCFCPCs), SCF network topology SCFCPCs with different orientations analyzed a numerical model. results demonstrate that an increase degree from 0 (SCFs perpendicular to direction) 1 parallel first leads corresponding then decrease SCFCPCs. highest achieved while increased...

High-density polyethylene (HDPE) pipelines in nuclear power plants (NPPs) have to meet high requirements for seismic performance. HDPE pipes been proved good performance, but joints are the weak links pipelines, and pipeline failures usually initiate from defects inside joints. Limited data available on performance of butt-fusion NPPs, especially terms changes after earthquakes. In this paper, full-scale shaking table tests were performed a test section suspended an NPP, which included...

Structural health monitoring of composite structures from manufacturing to operation is receiving significant attention ensure their performance and safety. In this paper, capacitive sensor arrays were designed embedded between adhesively bonded laminates for curing quality during loading detection in operation. A inversion method was proposed quantitatively determine the location value on structure. The results showed that whole process adhesive bonding successfully monitored. Based...

Abstract Short carbon fiber (SCF) reinforced thermoplastic composites (SCFRTCs) are attracting broad attention in various fields for their excellent mechanical properties. The fracture toughness, an essential characteristic of the resistance materials to crack propagation, is considered a critical aspect long-term performance SCFRTCs structures. toughness depends on two competing mechanisms: interface between SCFs and polymer matrix may promote initiation, while hinder propagation. In this...

Abstract Non-metallic composite pipelines possess remarkable flexibility and exceptional resistance to corrosion. Compared traditional metallic hydrogen pipelines, non-metallic effectively mitigate the challenges of corrosion brittleness, positioning them as a promising alternative for large-scale, low-cost transportation. Moreover, compared metal exhibit lower wall roughness, reducing hydraulic losses offering carbon reduction advantages. Within lifecycle emissions during operational stage...

Abstract Electrofusion joint is a principal connection method within non-metallic pipeline systems, and the mechanical strength of electrofusion joints great importance to achieve safe operation systems. By manufacturing with short carbon fiber reinforced thermoplastic composites (SCFRTCs), has been significantly improved, which shows potential in enhancement joints. However, due inherent stress concentrations structure limited ductility characteristic SCFRTCs, SCFRTCs are prone crack...

Abstract Pipe joints are weak points in non-metallic pipeline systems, and their mechanical strength is essential for ensuring safe operation. By reinforcing with short carbon fiber reinforced thermoplastic composites (SCFRTCs), the of pipe shows great improvement. Understanding failure mechanisms SCFRTCs crucial further structural enhancement In this study, mode first investigated through bursting tests. Microstructural analysis using Scanning Electron Microscopy (SEM) Computed Tomography...

The evaluation of high-temperature-induced damage to an ordinary Portland cement concrete was carried out.Results showed that the uniaxial compressive strength linearly decreased with increasing exposure temperature.After a high-temperature exposure, more easily deformed under loading.The as-received dense and free obvious holes.The aggregate were bonded tightly, no cracks observed.Above 200 °C, dehydration decomposition calcium silicate hydrate during led small holes, formed in cement,...

Abstract Electrofusion (EF) technology is widely used for connecting plastic pipes or composite pipes. For these in natural gas transportation and nuclear power plant, the higher operation pressure makes strength of EF joint a limitation pipeline systems. In this paper, high density polyethylene (HDPE) filled with different contents short-cut carbon fiber (CF) was prepared by melt mixing injection molding. Scanning electron microscopy imagines indicated good dispersion CF HDPE matrix....

Abstract Short carbon fiber reinforced thermoplastic composites (SCFRTCs) are widely applied in aerospace, transportation, shipping, and other fields because of their excellent mechanical properties high recyclability. The fracture toughness, which is an essential characteristic the resistance materials to crack propagation, considered a critical aspect long-term performance SCFRTCs structures. In this work, toughness characterized through three-point bending tests. stress intensity factor...

Abstract The hydrogen is prone to leakage, and the explosion risk after leakage high due low ignition temperature large combustion range (4%–74%). Therefore, sealing of pressure storage vessels crucial for safe use hydrogen. Rubber O-rings are common element in tanks. High tanks subjected severe conditions such as temperature, heat shock, cycle, resulting extrusion fracture, bending blister fracture increase compression set rubber during service. This paper introduces materials, application...