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Primeur weekly 2019-12-23

Quantum computing

Quantum technology expert to discuss quantum sensors for defense applications at Office of Naval Research ...

Focus on Europe

Fall 2019 edition of the e-IRG Magazine available ...

PRACE to issue Call for Proposals for DECI-16 (Tier-1) ...

Four new members joined the PRACE Training Centres network ...

Middleware

OLCF supercharges supercomputer analytics with Apache Kafka ...

Hardware

Dr. Ken Chang joins Ayar Labs executive leadership team as Senior Vice President of Engineering ...

Tachyum executives excited about company future after success of 2019 ...

Baidu and Samsung Electronics ready for production of leading-edge AI chip for early next year ...

CENIC builds 400G superchannel between Los Angeles and Riverside ...

Gina Tourassi appointed director of ORNL National Center for Computational Sciences ...

Mississippi State University and the National Oceanic and Atmospheric Administration celebrate Orion supercomputer ...

Argonne's Mira supercomputer set to retire after years of enabling groundbreaking science ...

ALCF supercomputers drive scientific discoveries in 2019 ...

Applications

SDSC supercomputer simulations aid in solving boron carbide mystery ...

Skin cancer mystery revealed in Yin and Yang protein ...

HPC pushes cryptography beyond Moore ...

With ADIOS, Summit processes celestial data at scale of massive future telescope ...

In the fight against cancer, ORNL and Stony Brook Cancer Center enlist an advanced neural network ...

Argonne-led team wins technology challenge at SC19 ...

The Cloud

Microsoft and Oracle expand interoperability partnership to Canada ...

Atos acquires Google Cloud Premier Partner Maven Wave ...

SDSC supercomputer simulations aid in solving boron carbide mystery


A: The longstanding mystery: Raman spectrum of amorphized boron carbide contains unexplained new peaks (green). B: A multiscale model showing layout of proposed mechanistic rationale and length scales of transmission electron microscopy (TEM) and Raman laser-size. C: Density functional theory (DFT)-simulated Raman spectra demonstrating origins of new Raman spectral peaks of boron carbide. Credit: High-Pressure Deformation and Amorphization in Boron Carbide in the Journal of Applied Physics (2019) - DOI:10.1063/1.5091795.
17 Dec 2019 San Diego - Boron carbide is one of the hardest materials on earth yet also very lightweight, which explains why it has been used in making vehicle armour and body protection for soldiers. Building upon decades of research on how to make boron carbide even more efficient, an engineering team at the University of Florida (UF) has been conducting supercomputer simulations to better understand the nanoscale level deformation mechanisms of this important material.

The research, which primarily used the Comet supercomputer at the San Diego Supercomputer Center (SDSC) at UC San Diego along with the Stampede and Stampede2 systems at the Texas Advanced Computing Center (TACC), may ultimately provide insight into better protective mechanisms for vehicle and soldier armor after further testing and development.

The study, using fundamental physics principles including quantum mechanics, was published earlier this year in an article called " High-Pressure Deformation and Amorphization in Boron Carbide " in theJournal of Applied Physics. Access to Comet was provided by a grant from the National Science Foundation's Extreme Science and Engineering Discovery Environment, or XSEDE.

"Our research provided new insights and an excellent way of analyzing the root cause of catastrophic failure at high pressure induced by high-velocity impacts", stated UF Professor Ghatu Subhash of Mechanical and Aerospace Engineering. "Although boron carbide has several desirable properties, under high-velocity projectile impacts it suffers from a deleterious phenomenon called amorphization, where its crystal structure collapses in nanometer-sized regions within the materials."

Amorphization is the precursor for cracks in the armor, which may cause eventual catastrophic failure.

Researchers were able to do large-scale and multi-scale modelling of icosahedral-boron rich solids, the class of crystallographic structure to which boron carbide belongs. "Our simulations ran over three times faster per core when we switched from local workstations to Comet, and today our knowledge pertaining to material behaviour of icosahedral ceramics has been elevated to a level that is second to none", stated Amnaya Awasthi, a postdoctoral researcher who co-authored the study.

Source: San Diego Supercomputer Center - SDSC

Back to Table of contents

Primeur weekly 2019-12-23

Quantum computing

Quantum technology expert to discuss quantum sensors for defense applications at Office of Naval Research ...

Focus on Europe

Fall 2019 edition of the e-IRG Magazine available ...

PRACE to issue Call for Proposals for DECI-16 (Tier-1) ...

Four new members joined the PRACE Training Centres network ...

Middleware

OLCF supercharges supercomputer analytics with Apache Kafka ...

Hardware

Dr. Ken Chang joins Ayar Labs executive leadership team as Senior Vice President of Engineering ...

Tachyum executives excited about company future after success of 2019 ...

Baidu and Samsung Electronics ready for production of leading-edge AI chip for early next year ...

CENIC builds 400G superchannel between Los Angeles and Riverside ...

Gina Tourassi appointed director of ORNL National Center for Computational Sciences ...

Mississippi State University and the National Oceanic and Atmospheric Administration celebrate Orion supercomputer ...

Argonne's Mira supercomputer set to retire after years of enabling groundbreaking science ...

ALCF supercomputers drive scientific discoveries in 2019 ...

Applications

SDSC supercomputer simulations aid in solving boron carbide mystery ...

Skin cancer mystery revealed in Yin and Yang protein ...

HPC pushes cryptography beyond Moore ...

With ADIOS, Summit processes celestial data at scale of massive future telescope ...

In the fight against cancer, ORNL and Stony Brook Cancer Center enlist an advanced neural network ...

Argonne-led team wins technology challenge at SC19 ...

The Cloud

Microsoft and Oracle expand interoperability partnership to Canada ...

Atos acquires Google Cloud Premier Partner Maven Wave ...