... Abstract With the development of global society and the progress of technology, hydrogen energy is gradually becoming an emerging clean energy source. As a special high-pressure container for storing hydrogen, damage to the hydrogen storage vessel under the impact of dynamic load can cause...

... Abstract Elastic modulus of 316L and XM-19 austenitic stainless steel was characterized before and after hydrogen charging using impulse excitation. Four coupons of each alloy were subsequently charged at 300 C and 138 MPa for 13 days with gaseous hydrogen to ensure an equilibrium concentration...

... Abstract High temperature hydrogen attack (HTHA) is a known degradation mechanism in the refining industry for carbon and low alloy steels operating at temperatures above 400°F in hydrogen service. Historically the integrity of operating equipment subject to these conditions has been ensured...

... Abstract This work demonstrated an experimental testing process to quantitatively test for the effects of pressurized hydrogen on polymeric materials. It was shown that some o-ring materials are susceptible to deleterious property changes. A high-pressure hydrogen testing system with a window...

... Abstract Anomalous and inconsistent results were observed while performing fatigue crack growth tests in hydrogen gas on 4130X Cr-Mo steel when the stress-intensity factor range (ΔK) was less than 10 MPa m 1/2 . Two particular abnormal characteristics were noted: i) sequential measurements...

... Abstract Strain-life testing of a 4130 pressure vessel steel was conducted in air and in a high-pressure gaseous-hydrogen environment. Hydrogen causes an order of magnitude decrease in lifetime compared to in-air performance at the same strain-amplitudes. This decrease in lifetime in hydrogen...

... Abstract Numerous projects are looking into distributing blends of natural gas and different amounts of gaseous hydrogen through the existing natural gas distribution system, which is widely composed of medium density polyethylene (MDPE) line pipes. The mechanical behavior of MDPE with hydrogen...

... Abstract Low alloy ferritic steels used in fabricating cost-effective cylinders for hydrogen storage are susceptible to hydrogen embrittlement. A model first proposed by Amaro et al. (ARFiDS model) for predicting the effects of hydrogen pressure on the kinetics of hydrogen assisted fatigue...

... Abstract The fully-wrapped carbon fiber reinforced cylinders with an aluminum liner are currently the most common high-pressure hydrogen storage tank for vehicles. However, it is difficult to detect it by traditional detection methods effectively. X-ray digital radiographic inspection...

... in this field, on which we focus our work, l Depth of notch is the precise determination of material properties under high- Length of notch pressure hydrogen atmosphere. p Poisson s ratio r Pressure At the Materials Testing Institute (MPA) University of Inner radius of rod Stuttgart, a new measurement...

...Abstract Abstract New non-destructive testing (NDT) inspection technology, quantification of damage, and tensile testing, has enabled the assessment of conservatism associated with the hydrogen induced cracking (HIC) damage parameter (DH) currently used in API 579 – 1/ASME Fitness-For-Service...

..., Spain Santander, Spain ABSTRACT 1. INTRODUCTION Medium and high-strength steels working in harsh The use of metallic alloys, mainly new generation environments are susceptible of suffering of mechanical microalloyed medium and high strength steels, is extended today properties loss due to hydrogen...

...Abstract Abstract A combustion oscillation experiment fueling a mixture of hydrogen and natural gas was performed. The results showed oscillating frequencies of around 350 Hz in the case of the town gas only, whereas oscillating frequencies of around 200 and 400 Hz were observed in the hydrogen...

...Abstract Abstract The use of high pressure vessels for the purpose of storing gaseous fuels for land based transportation application is becoming common. Fuels such as natural gas and hydrogen are currently being stored at high pressure for use in fueling stations. This paper will investigate...

...HYDROGEN EFFECTS ON FRACTURE TOUGHNESS OF ADDITIVELY MANUFACTURED TYPE 304L STAINLESS STEEL Anthony McWilliams1, Michael Morgan, Paul Korinko Savannah River National Laboratory Aiken, SC ABSTRACT Rectangular blocks of Type 304L stainless steel were additively manufactured (AM) using the directed...

...Abstract Abstract A hydrogen manufacturing plant experienced circumferential cracking at the dissimilar weld on the outlet header. The outlet header was a cold wall design and the dissimilar weld was between HP40 modified and carbon ½ Mo steels. The resultant failure investigation found...

...EFFECTS OF EXTREME HYDROGEN ENVIRONMENTS ON THE FRACTURE AND FATIGUE BEHAVIOR OF ADDITIVELY MANUFACTURED STAINLESS STEELS Thale R. Smith, Chris San Marchi, Joshua D. Sugar, and Dorian K. Balch Sandia National Laboratories Livermore, CA ABSTRACT Additive manufacturing (AM) offers the potential...

... Reliability of hydrogen pipelines and storage tanks is significantly influenced by the mechanical performance of the structural materials exposed to the hydrogen environment. Fracture behavior and fracture toughness are of specific interest since they are relevant to structural integrity...

... A numerical model for dispersion of hydrogen in hydrogen powered automobiles was established basing on finite element method with species transport and reaction module of FLUENT. And corresponding numerical simulations were done in order to analysis the dispersion of hydrogen due to leakage from...

... 14 01 2011 Hydrogen and oxygen generation due to the radiolysis of water is a recognized hazard in pipe systems used in the nuclear industry, where the accumulation of hydrogen and oxygen at high points in the pipe system is expected, and explosive conditions exist. Pipe ruptures...