scholarly journals Reliability design of a pressure vessel made of composite materials

2022 ◽  
Vol 279 ◽  
pp. 114726
Author(s):  
Luigi Solazzi ◽  
Marco Vaccari
Keyword(s):  
Composite Materials ◽  
Pressure Vessel ◽  
Reliability Design

The Actualities and Development of Fatigue Reliability Design Methods of Pressure Vessels

2011 ◽  
Vol 199-200 ◽  
pp. 559-563 ◽  
Author(s):  
Guang Zhong Hu ◽  
Liang Dong Zhang ◽  
Zhong Bin Liu ◽  
Kang Liu
Keyword(s):  
Pressure Vessel ◽  
Large Scale ◽  
Pressure Vessels ◽  
Design Methods ◽  
Stochastic Dynamic ◽  
Fatigue Reliability ◽  
Load Spectrum ◽  
Reliability Design ◽  
Fatigue Design ◽  
Finite Element Technology

Petrochemical pressure vessel equipment develops to be large-scale and super large-scale under extreme working conditions such as high temperature and high pressure, which puts forward new demands for the reliability of the pressure vessel. The present paper discusses the fatigue design theory of pressure vessels and analyzes the fatigue design methods of ASME, BS5500 and JB4732. Pressure vessel loads absorbed (pressure, temperature, earthquake, wind, snow, etc.) have significant stochastic dynamic characteristics and coupling characteristics. The random load of the current design is simplified, with a large safety factor in exchange for equipment safety. However, it is difficult to guarantee the rationality and accuracy of the result. With the development of data acquisition, processing and finite element technology, it is inevitable to be based on measured load spectrum and consider the coupling of the random loads to work out fatigue reliability design methods of pressure vessels.

Study on Reliability Design of Fiber Wound Reinforced Plastics Pressure Vessel

2007 ◽  
Vol 353-358 ◽  
pp. 1239-1242
Author(s):  
Jun Shen ◽  
Huai Qin Xie
Keyword(s):  
Pressure Vessel ◽  
Structural Reliability ◽  
Fiber Strength ◽  
High Reliability ◽  
Pressure Vessels ◽  
Strength Distribution ◽  
Material System ◽  
Reliability Design ◽  
Conventional Design ◽  
Structural Resistance

To meet the high reliability of structural design and safety evaluation on carbon fiber wound reinforced polymeric (CFWRP) pressure vessel, the traditional safety factor design was substituted by reliability design based on the reliability theory and statistical principle. Eight CFWRP pressure vessels were manufactured with the same material system by the same winding technique. And experiments were conducted to obtain the probabilistic distributions of design variables. Results derived from reliability design (fiber thickness) agreed well with experimental results and were much lower than that from conventional design. Through comparison among reliability design results with different statistics of fiber strength, significant effect of the variation of fiber strength on structural reliability of composite pressure vessel was demonstrated. The conventional design was verified to be not reasonable since it considers only the mean value of fiber strength without the effect of fiber strength distribution on structural resistance of pressure vessel.

Novel Pressure Vessel for Pressurizing Corrosive Liquids With Applications in Accelerated Life Testing of Composite Materials

2021 ◽  
Vol 143 (5) ◽  
Author(s):  
Dillon Fontaine ◽  
Anthony Marshall ◽  
Arun Shukla
Keyword(s):  
Composite Materials ◽  
Pressure Vessel ◽  
Saline Water ◽  
Fiber Composite ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Corrosive Media ◽  
Pump System ◽  
Water Solutions ◽  
Accelerated Life

Abstract A system was designed for high-pressure accelerated life testing (ALT) of composite materials exposed to saline water solutions or other potentially corrosive media. The system was comprised primarily of a large stainless steel pressure vessel with the capability to perform extended pressure holds of up to 41.3 MPa at temperatures up to 70 °C. Using a nylon fabric-reinforced Buna-N rubber diaphragm as a media isolator and an inert ceramic coating on all wetted surfaces of the vessel, 3.5% saline water solutions were successfully held at test pressures and temperatures for extended periods with no evidence of corrosion or other degradation even after several days of exposure. Pressurization was achieved through a hydraulic pump system, which contained pressure monitoring equipment and valves and was isolated from the saline water by the diaphragm. The temperature of the entire vessel and contents was maintained by complete immersion in a heated, filtered water bath. The efficacy of using an elastomeric diaphragm to transfer large pressures between two near-incompressible fluids without mixing was shown, provided adequate reinforcement in the form of an interwoven fabric was provided to prevent tearing and extrusion from the extreme through-thickness stresses, particularly at clamping locations. Discussion on the effects of temperature, material, thickness, reinforcement, and sealing methods on the effectiveness and repeatability of the system is provided, and a demonstration of an accelerated test on a carbon–fiber composite is also presented.

Probabilistic Burst Strength Evaluation of a Filament Wound Composite Pressure Vessel

2020 ◽  
Author(s):  
Ali Yetgin ◽  
Emre Özaslan ◽  
Bülent Acar
Keyword(s):  
Composite Materials ◽  
Pressure Vessel ◽  
Material Properties ◽  
Mechanical Performance ◽  
Pressure Vessels ◽  
Burst Pressure ◽  
Pressure Loading ◽  
Element Analysis ◽  
Filament Wound ◽  
Winding Angle

Abstract Nowadays composite materials are used in many different applications, such as aerospace, automotive, sport, energy due to their superior material properties in terms of high strength to weight ratio, high corrosion resistance, and great damage tolerance. One important component produced from these composite materials is pressure vessels that are generally exposed to internal pressure loading. Mechanical performance of the pressure vessel directly depends on various parameters such as material properties or winding angle etc. However, it is well known that the material properties of composites are generally dispersed. The main concern of this study is to investigate the mechanical performance of a filament wound pressure vessel in terms of first ply failure (FPF) and burst pressure under internal pressure loading taking into account uncertainty of material properties and winding angles for different layers. The distributions for each material property were found by material characterization tests and goodness-of-fit test. The winding angle was selected as a random variable. Different statistical distribution types were compared to show the effect of distribution type. Monte Carlo Simulation (MC) was performed to predict the distribution function of the mechanical response. Finite element analysis was performed to obtain stress distribution of the pressure vessel. Both stochastic FPF and burst pressure predictions were verified by test results. Also, the finite element analysis was verified by strain gauge measurements that were located on the different regions of pressure vessel. The study was performed for two different ambient temperature to show the effect of different temperatures on the material properties for composite materials. Effects of each selected parameters on the FPF and burst pressure were discussed. Probabilistic analysis showed the importance of considering the uncertainty of material properties and the winding angle to predict the mechanical performance of composite pressure vessels.

Identification of strength parameters for a high-pressure vessel wound by fibre reinforced composite materials

1997 ◽  
Vol 211 (3) ◽  
pp. 209-213 ◽  
Author(s):  
L Qian ◽  
R Yuan
Keyword(s):  
High Pressure ◽  
Composite Materials ◽  
Bayesian Methods ◽  
Pressure Vessel ◽  
Failure Criterion ◽  
Three Dimensional ◽  
Stress Fields ◽  
Strength Parameters ◽  
High Pressure Vessel ◽  
Reinforced Composite

In this paper a high-pressure vessel (HPV) is assumed to be wound by a set of macro-scopically orthotropic layers constructed respectively from unidirectional laminae. The formulae for the three-dimensional stress fields in the vessel are established. In the light of the Tsai-Wu failure criterion, the first ply failure internal pressure (FPFP) is calculated. Using this measured FPFP, the vessel strength parameters are identified by Bayesian methods.

Comparative Microstructures of Ion Milled and Electrochemically Thinned Composite Materials

1974 ◽  
Vol 32 ◽  
pp. 546-547
Author(s):  
R.R. Russell
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Composite Materials ◽  
Great Difficulty ◽  
Ion Milling ◽  
Transmission Electron ◽  
Ion Damage ◽  
Intermetallic Composite

Transmission electron microscopy of metallic/intermetallic composite materials is most challenging since the microscopist typically has great difficulty preparing specimens with uniform electron thin areas in adjacent phases. The application of ion milling for thinning foils from such materials has been quite effective. Although composite specimens prepared by ion milling have yielded much microstructural information, this technique has some inherent drawbacks such as the possible generation of ion damage near sample surfaces.

Transmission electron microscopy of composite materials

1988 ◽  
Vol 46 ◽  
pp. 1012-1015
Author(s):  
K.P.D. Lagerlof
Keyword(s):  
Composite Materials ◽  
Physical Properties ◽  
Structural Defects ◽  
Structural Composites ◽  
Multiphase Materials ◽  
Structural Reinforcement ◽  
Transmission Electron ◽  
Reinforced Fiber ◽  
Particulate Reinforced Composites ◽  
Definition Of

Although most materials contain more than one phase, and thus are multiphase materials, the definition of composite materials is commonly used to describe those materials containing more than one phase deliberately added to obtain certain desired physical properties. Composite materials are often classified according to their application, i.e. structural composites and electronic composites, but may also be classified according to the type of compounds making up the composite, i.e. metal/ceramic, ceramic/ceramie and metal/semiconductor composites. For structural composites it is also common to refer to the type of structural reinforcement; whisker-reinforced, fiber-reinforced, or particulate reinforced composites [1-4].For all types of composite materials, it is of fundamental importance to understand the relationship between the microstructure and the observed physical properties, and it is therefore vital to properly characterize the microstructure. The interfaces separating the different phases comprising the composite are of particular interest to understand. In structural composites the interface is often the weakest part, where fracture will nucleate, and in electronic composites structural defects at or near the interface will affect the critical electronic properties.

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