Zobrazeno 1 - 10
of 705
pro vyhledávání: '"NAM PHAN"'
Publikováno v:
Additive Manufacturing Letters, Vol 11, Iss , Pp 100249- (2024)
The damage to fastener holes in aerospace aluminum structures presents significant challenges for aircraft durability, and conventional bushing methods for repairing oversized holes often fall short due to the lack of metallurgical bonding and limite
Externí odkaz:
https://doaj.org/article/eb55e76380c949eb9eb3ec2ed8bba490
Autor:
Duong, G. K., Nam, Phan Thành
We prove an analogue of the Lieb--Thirring inequality for many-body quantum systems with the kinetic operator $\sum_i (-\Delta_i)^s$ and the interaction potential of the form $\sum_i \delta_i^{-2s}$ where $\delta_i$ is the nearest-neighbor distance t
Externí odkaz:
http://arxiv.org/abs/2501.00866
Autor:
Dietze, Charlotte, Nam, Phan Thành
We give a new proof of the compactness of minimizing sequences of the Sobolev inequalities in the critical case. Our approach relies on a simplified version of the concentration-compactness principle, which does not require any refinement of the Sobo
Externí odkaz:
http://arxiv.org/abs/2412.08616
We study the ground state energy of a gas of spin $1/2$ fermions with repulsive short-range interactions. We derive an upper bound that agrees, at low density $\rho$, with the Huang-Yang conjecture. The latter captures the first three terms in an asy
Externí odkaz:
http://arxiv.org/abs/2409.17914
We prove a rigorous lower bound on the correlation energy of interacting fermions in the mean-field regime for a wide class of singular interactions, including the Coulomb potential. Combined with the upper bound obtained in \cite{ChrHaiNam-23b}, our
Externí odkaz:
http://arxiv.org/abs/2405.01386
Publikováno v:
Materials & Design, Vol 182, Iss , Pp - (2019)
Additive manufacturing (AM) has provided an opportunity for fabricating complex parts. Fabricating these parts without defects is currently a challenge. Therefore, understanding AM defects is fundamental to the structural integrity of load carrying c
Externí odkaz:
https://doaj.org/article/0256352aee8d4746bfe6d1ef10f1cc59
Publikováno v:
Data in Brief, Vol 25, Iss , Pp - (2019)
This article presents the data demonstrating the synergistic effect of surface roughness and heat treatment on the fatigue behavior of 17–4 PH stainless steel (SS) fabricated via laser beam powder bed fusion (LB-PBF) [1]. Two sets of specimens, in
Externí odkaz:
https://doaj.org/article/4b1e01e0d0c544a3a30adf06bf62e395
We prove a Cwikel-Lieb-Rozenblum type inequality for the number of negative eigenvalues of the Hardy-Schr\"odinger operator $-\Delta - (d-2)^2/(4|x|^2) -W(x)$ on $L^2(\mathbb{R}^d)$. The bound is given in terms of a weighted $L^{d/2}-$norm of $W$ whi
Externí odkaz:
http://arxiv.org/abs/2312.16482
Autor:
Dietze, Charlotte, Nam, Phan Thành
Publikováno v:
Calc. Var. Partial Differential Equations 63 (2024), Art. 184
We derive a family of interpolation estimates which improve Hardy's inequality and cover the Sobolev critical exponent. We also determine all optimizers among radial functions in the endpoint case and discuss open questions on nonrestricted optimizer
Externí odkaz:
http://arxiv.org/abs/2312.11249
Publikováno v:
Frattura ed Integrità Strutturale, Vol 10, Iss 37, Pp 166-172 (2016)
This study compares both uniaxial and multiaxial variable amplitude experimental crack growth data for naturally initiated fatigue cracks in tubular specimens of 2024-T3 aluminum alloy to predictions based on two state-of-the-art analysis codes: Un
Externí odkaz:
https://doaj.org/article/c3f47c44f2714dbe9fa1b6e5989f3091