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Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
Sung Sik Kang, In Sup Kim
Nuclear Technology | Volume 97 | Number 3 | March 1992 | Pages 336-343
Technical Paper | Material | doi.org/10.13182/NT92-A34641
Articles are hosted by Taylor and Francis Online.
The effect of dynamic strain aging (DSA) on fracture is investigated on the quenched and tempered specimens of American Society of Mechanical Engineers (ASME) standard SA508 class 3 nuclear pressure vessel steel. Serrated flow by DSA is observed between 180 and 340°C at a tensile strain rate of 2.08 × 10−4/s and 1.25 × 10−3/s. The DSA causes a sharp rise in the ultimate tensile strength and a marked decrease in ductility. The DSA range shifts to higher temperatures with increased strain rates. The temperature and strain rate dependence of the onset of serrations yields an activation energy of 16.2 kcal/mol, which suggests that the process is controlled by interstitial diffusion of carbon and nitrogen in ferrite. The Ji value obtained from the direct current potential drop (DCPD) method, for true crack initiation, is lowered by DSA. The drop in Ji at elevated temperatures may be because of the interaction of the interstitial impurities with dislocations at the crack front. Compared with JIC from American Society for Testing and Materials (ASTM) standard E813, the Ji by DCPD is a better parameter to use to detect the DSA effect on fracture toughness. Crack propagation is also affected in terms of the tearing modulus. The tearing modulus in dynamic strain aging is ∼30% smaller than that at room temperature.