Browse Topic: Hoses and tubes

Items (3,907)
In a three-phase voltage source inverter, in order to prevent the direct short circuit of the upper and lower tubes of the bridge arm and ensure the normal operation of the inverter, microsecond-level dead time needs to be added when the power devices are turned on and off. However, due to the dead-time effect, slight distortion may occur in the inverter within the modulation period, and this distortion will eventually lead to harmonic components in the output current after accumulation, thereby generating torque ripple. Against the above background, implementing dead-time compensation strategies is very important. To compensate for the voltage error caused by the dead-time effect, current polarity determination is required first. Then, the dead time is compensated, thereby indirectly compensating for the voltage error caused by the dead-time effect. Regarding the dead-time compensation time, without changing the hardware, this paper proposes a solution to turn off the dead-time
Jing, JunchaoZhang, JunzhiZuo, BotaoLiu, YiqiangYang, TianyuZhu, Lulong
Heat shrink polymer is a type of material used in many industries’ segments due to their ability to contract and fit snugly around objects when heat is applied. These products are commonly commercialized in tube format (e.g.: sleeves), made from polyolefin or fluoropolymers, which have the property of shrinking when heated. Nanomaterials present many applications, and their usage is a remarkable tool aiming to improve many properties of materials. Then, many improvements including increase of performance and price reduction may be achieved due to its unique properties when nanomaterials are used into heat shrink polymer sleeves. This work presents a systematic review about the state of the art on heat-shrinkable materials for the automotive industry. As a methodology, articles from the last 10 years on the subject were selected. The keywords “heat shrink” AND “nanomaterial” AND “tubes OR sleeves” were used in three different databases, being “Scopus”, “Web of Science” and “MDPI”. After
Kerche, Eduardo F.Polkowski, RodrigoHoriuchi, LucasGoncalves, Everaldo
A tested method of data presentation and use is described herein. The method shown is a useful guide, to be used with care and to be improved with use.
S-12 Powered Lift Propulsion Committee
This specification covers a low-carbon steel in the form of seamless tubing up to 5.50 inches (139.7 mm), nominal OD, inclusive.
AMS E Carbon and Low Alloy Steels Committee
This specification covers a titanium alloy in the form of seamless tubing (see 8.7).
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of seamless tubing (see 8.6).
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of seamless tubing (see 8.7).
AMS G Titanium and Refractory Metals Committee
This SAE Standard covers fittings, couplers, and hoses intended for connecting service hoses from mobile air-conditioning systems to service equipment such as charging, recovery, and recycling equipment (see Figure 1). This specification covers service hose fittings and couplers for MAC service equipment service hoses, per SAE J2843 and SAE J2851, from mobile air-conditioning systems to service equipment such as manifold gauges, vacuum pumps, and air-conditioning charging, recovery, and recycling equipment.
Interior Climate Control Service Committee
This specification covers a premium aircraft-quality, corrosion-resistant steel in the form of bars, wire, forgings, mechanical tubing, and forging stock.
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers an aluminum alloy in the form of seamless drawn tubing having nominal wall thickness of 0.018 to 0.500 inch (0.46 to 12.70 mm), inclusive (see 8.4).
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of seamless drawn tubing with wall thickness of 0.025 to 0.500 inch (0.64 to 12.70 mm), inclusive (see 8.5).
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of seamless round tubing with wall thickness from 0.025 to 0.500 inch (0.64 to 12.70 mm), inclusive (see 8.6).
AMS D Nonferrous Alloys Committee
This specification covers a magnetically soft nickel-iron alloy in the form of bars, rods, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
The goal of this work is to increase the accuracy and efficiency of hose cutting operations in small scale industries is by designing and building an automatic hose-cutting equipment. The device uses a computer-controlled system to autonomously cut pipes of various sizes and lengths. By means of a stepper motor-driven, rapidly spinning blade, the cutting process is accomplished. Additionally, the machine has sensors that measure the hose's length and modify the cutting position as necessary. Premium components and materials are used in the machine's construction; these are chosen for their performance and longevity. The device is able to boost cut precision and raise industry production all around from 100% to 190% efficient system thereby decreasing labor and time needed for hose cutting operations.
Feroz Ali, L.Manikandan, R.Madhankumar, S.Sri Hari, P.Suriya Prakash, T.Vishnu Doss, G.
This specification covers beryllium in the form of bars, rods, tubing, and machined shapes fabricated from vacuum hot-pressed powder.
AMS G Titanium and Refractory Metals Committee
This specification covers beryllium in the form of bars, rods, tubing, and machined shapes fabricated from vacuum hot-pressed powder.
AMS G Titanium and Refractory Metals Committee
Linear dynamics simulations are performed on engine components to ensure structural integrity under dynamic loading. The finite element model of the engine assembly must be prepared accurately to avoid under or over design of the engine components. Flexible hoses are present at pipe routings and modeling them in simulations is a challenge because the stiffness of the composite is not known. The hose under study in this paper is a rubber composite with a knitted reinforcement layer. A multiscale modelling approach is presented to characterize the hose stiffness. A representative volume element geometry i.e., unit cell representation of the composite, consisting of the knitted yarn and surrounding rubber is used to establish orthotropic elastic properties at microscale, by performing finite element homogenization using the ANSYS material designer module. The homogenized properties are assigned to the macroscale hose geometry to perform modal analysis simulation in free-free and fixed
Ashodiya, Jay VirendraJayachandran, JanarthananSanthosh, B
The lithium-ion battery is the most common type of batteries in modern electric vehicles. During vehicle operation and battery charging, the temperature of the battery cells increases. The temperature of any battery must be controlled and maintained within a specified range to ensure maximum efficiency. Considering the overall thermal effect on the battery, a battery cooling system is of great importance in electric vehicles to maintain the temperature of the battery cells inside the battery pack. There are different types of systems for battery cooling, out of which the water cooled systems are very popular. They use a mixture of water and ethylene glycol to absorb heat from the battery cells. The coolant circulates through the tubes or cold plates surrounded by the cells to absorb the heat. The paper involves the study of variation on temperature and pressure drop including overall thermal performance on the batteries by changing the internal structure. The temperature of battery
Parayil, PaulsonAhmad, TaufeeqDagar, AakashGoel, Arunkumar
In demanding automotive coolant applications characterized by extreme pressure and temperature conditions, a variety of Mechanically Attached Fittings (MAFs) are offered by multinational corporations (MNCs). These engineered fittings have been designed to meet the rigorous requirements of various industries, providing a cost-effective and reliable means to seal engine/motor coolant hose joints. Mechanical fitting assemblies are critical in various engineering systems and are used for connecting various fluid-carrying locations. Understanding leakage phenomena from MAFs is essential for ensuring their reliability and efficiency. This study explores the deployment of Fluid Pressure Penetration Technique (FPPT) available in Abaqus FEA software to comprehensively analyze leakage paths in mechanically joined fittings. The FPPT offers a systematic approach to model fluid penetration behavior within fitting joints under many loading conditions. By utilizing Abaqus software, a powerful finite
Aher, Ravi KautikJivani, ChinmayOlesnavich, MichaelLima, JosePillai, Pramod
This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
This specification covers a corrosion- and heat-resistant nickel alloy in the form of welded and drawn tubing 0.125 inch (3.18 mm) and over in nominal OD and 0.015 inch (0.38 mm) and over in nominal wall thickness.
AMS F Corrosion and Heat Resistant Alloys Committee
This SAE Information Report documents efforts toward developing a test method for the evaluation of hose protection sleeves used in hydraulic fluid power applications. These sleeves are intended for general application and hydraulic systems on industrial equipment and commercial products. These sleeves shall be capable of providing protection to pin hole failures in hydraulic systems operating to working pressures specified by the manufacturer. Hose assembly burst containment is not in the scope of this document.
Hydraulic Hose and Hose Fittings Committee
This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
This specification covers an aircraft-quality nitriding grade low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
Whether for vascular catheters or implantable devices, medical tubing must meet tough standards for flexibility, strength, and biocompatibility. That’s why more manufacturers are turning to thermoplastic polyurethanes (TPUs) that strike the ideal balance between these key properties, making them an excellent choice for high-performance medical tubing. Unlocking the best that TPUs have to offer means optimizing the extrusion process. This article looks at why TPUs are a top pick, the common obstacles in extrusion, and the ways manufacturers can fine-tune their process to get the most out of different grades.
This SAE Standard encompasses the recommended minimum requirements for non-metallic tubing and/or combinations of metallic tubing to non-metallic tubing assemblies manufactured as liquid- and/or vapor-carrying systems designed for use in gasoline, alcohol blends with gasoline, or diesel fuel systems. This SAE Standard is intended to cover tubing assemblies for any portion of a fuel system which operates above −40 °C (−40 °F) and below 115 °C (239 °F), and up to a maximum working gage pressure of 690 kPa (100 psig). The peak intermittent temperature is 115 °C (239 °F). For long-term continuous usage, the temperature shall not exceed 90 °C (194 °F). It should be noted that temperature extremes can affect assemblies in various manners and every effort must be made to determine the operating temperature to which a specific fuel line assembly will be exposed, and design accordingly. The applicable SAE standards should be referenced when designing liquid-carrying and/or vapor-carrying
Fuel Systems Standards Committee
This test method provides a standardized procedure for evaluating the electrochemical resistance of automotive coolant hose and materials. Electrochemical degradation has been determined to be a major cause of EPDM coolant system hose failures. The test method consists of a procedure which induces voltage to a test specimen while it is exposed to a water/coolant solution. Method #1, referred to as a “Brabolyzer” test, is a whole hose test. Method #2, referred to as a “U” tube test, uses cured plate samples or plates prepared from tube material removed from hose (Method No. 2 is intended as a screening test only). Any test parameters other than those specified in this SAE Recommended Practice, are to be agreed to by the tester and the requester.
Non-Hydraulic Hose Committee
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
This specification defines the requirements for a grooved clamp coupling and flanges suitable for joining intermediate pressure and temperature ducting in aircraft air systems. The rigid coupling joint assembly, hereafter referred to as "the joint", shall operate within the temperature range of -65 °F to +800 °F.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
This specification covers a corrosion- and heat-resistant steel in the form of bars, wire, mechanical tubing, forgings, and forging stock.
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers an age-hardenable nitriding grade of aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
AMS E Carbon and Low Alloy Steels Committee
This specification covers a corrosion- and heat-resistant steel in the form of bars, wire, forgings, mechanical tubing, flash-welded rings, and stock for forging or flash-welded rings.
AMS F Corrosion and Heat Resistant Alloys Committee
This standard establishes basic design criteria including preferred bend radii, straight lengths between bends, flattening and surface conditions in the bend area. Also included is a table of preferred tubing sizes and wall thicknesses and a formula for determining a minimum bend radius for a given tube diameter.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
This specification covers an aircraft quality, corrosion- and heat-resistant steel in the form of bars, wire, forgings, mechanical tubing, flash-welded rings, and stock for forging or flash-welded rings.
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers a corrosion- and heat-resistant steel in the form of bars, wire, forgings, mechanical tubing, flash-welded rings, and stock for forging or flash-welded rings.
AMS F Corrosion and Heat Resistant Alloys Committee
This specification covers one grade of brass in the form of seamless tubing (see 8.5).
AMS D Nonferrous Alloys Committee
This document establishes age limit and guidance for acceptance of hose and hose assemblies containing elastomeric materials for use in aircraft, space vehicles, missiles and component assemblies thereof at time of delivery to the contractor, procuring activity, or contracting officer. This document does not establish limitations on storage times for military/civil activities nor operating life.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
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