The Experts below are selected from a list of 23562 Experts worldwide ranked by ideXlab platform
Yihui Zhang - One of the best experts on this subject based on the ideXlab platform.
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3d printing damage tolerant architected metallic materials with shape recoverability via special Deformation design of constituent material
ACS Applied Materials & Interfaces, 2021Co-Authors: Zhiwei Xiong, Shijie Hao, Yong Liu, Lishan Cui, Hong Yang, Chengbo Cui, Daqiang Jiang, Ying Yang, Hongshuai Lei, Yihui ZhangAbstract:Architected metallic materials generally suffer from a serious engineering problem of mechanical instability manifested as the emergence of Localized Deformation bands and collapse of strength. They usually cannot exhibit satisfactory shape recoverability due to the little recoverable strain of metallic constituent material. After yielding, the metallic constituent material usually exhibits a continuous low strain-hardening capacity, giving the local yielded regions of architecture low load resistance and easily developing into excessive Deformation bands, accompanied by the collapse of strength. Here, a novel constituent material Deformation design strategy has been skillfully proposed, where the low load resistance of yielded regions of the architecture can be effectively compensated by the significant self-strengthening behavior of constituent material, thus avoiding the formation of Localized Deformation bands and collapse of strength. To substantiate this strategy, shape-memory alloys (SMAs) are considered as suitable constituent materials for possessing both self-strengthening behavior and shape-recovery function. A 3D-printing technique was adopted to prepare various NiTi SMA architected materials with different geometric structures. It is demonstrated that all of these architected metallic materials can be stably and uniformly compressed by up to 80% without the formation of Localized bands, collapse of strength, and structural failure, exhibiting ultrahigh damage tolerance. Furthermore, these SMA architected materials can display more than 98% shape recovery even after 80% Deformation and excellent cycle stability during 15 cycles. This work exploits the amazing impact of constituent materials on constructing supernormal properties of architected materials and will open new avenues for developing high-performance architected metallic materials.
Zhiwei Xiong - One of the best experts on this subject based on the ideXlab platform.
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3d printing damage tolerant architected metallic materials with shape recoverability via special Deformation design of constituent material
ACS Applied Materials & Interfaces, 2021Co-Authors: Zhiwei Xiong, Shijie Hao, Yong Liu, Lishan Cui, Hong Yang, Chengbo Cui, Daqiang Jiang, Ying Yang, Hongshuai Lei, Yihui ZhangAbstract:Architected metallic materials generally suffer from a serious engineering problem of mechanical instability manifested as the emergence of Localized Deformation bands and collapse of strength. They usually cannot exhibit satisfactory shape recoverability due to the little recoverable strain of metallic constituent material. After yielding, the metallic constituent material usually exhibits a continuous low strain-hardening capacity, giving the local yielded regions of architecture low load resistance and easily developing into excessive Deformation bands, accompanied by the collapse of strength. Here, a novel constituent material Deformation design strategy has been skillfully proposed, where the low load resistance of yielded regions of the architecture can be effectively compensated by the significant self-strengthening behavior of constituent material, thus avoiding the formation of Localized Deformation bands and collapse of strength. To substantiate this strategy, shape-memory alloys (SMAs) are considered as suitable constituent materials for possessing both self-strengthening behavior and shape-recovery function. A 3D-printing technique was adopted to prepare various NiTi SMA architected materials with different geometric structures. It is demonstrated that all of these architected metallic materials can be stably and uniformly compressed by up to 80% without the formation of Localized bands, collapse of strength, and structural failure, exhibiting ultrahigh damage tolerance. Furthermore, these SMA architected materials can display more than 98% shape recovery even after 80% Deformation and excellent cycle stability during 15 cycles. This work exploits the amazing impact of constituent materials on constructing supernormal properties of architected materials and will open new avenues for developing high-performance architected metallic materials.
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3D-Printing Damage-Tolerant Architected Metallic Materials with Shape Recoverability via Special Deformation Design of Constituent Material
'American Chemical Society (ACS)', 2021Co-Authors: Zhiwei Xiong, Shijie Hao, Lishan Cui, Hong Yang, Chengbo Cui, Daqiang Jiang, Ying Yang, Yinong Liu, Hongshuai LeiAbstract:Architected metallic materials generally suffer from a serious engineering problem of mechanical instability manifested as the emergence of Localized Deformation bands and collapse of strength. They usually cannot exhibit satisfactory shape recoverability due to the little recoverable strain of metallic constituent material. After yielding, the metallic constituent material usually exhibits a continuous low strain-hardening capacity, giving the local yielded regions of architecture low load resistance and easily developing into excessive Deformation bands, accompanied by the collapse of strength. Here, a novel constituent material Deformation design strategy has been skillfully proposed, where the low load resistance of yielded regions of the architecture can be effectively compensated by the significant self-strengthening behavior of constituent material, thus avoiding the formation of Localized Deformation bands and collapse of strength. To substantiate this strategy, shape-memory alloys (SMAs) are considered as suitable constituent materials for possessing both self-strengthening behavior and shape-recovery function. A 3D-printing technique was adopted to prepare various NiTi SMA architected materials with different geometric structures. It is demonstrated that all of these architected metallic materials can be stably and uniformly compressed by up to 80% without the formation of Localized bands, collapse of strength, and structural failure, exhibiting ultrahigh damage tolerance. Furthermore, these SMA architected materials can display more than 98% shape recovery even after 80% Deformation and excellent cycle stability during 15 cycles. This work exploits the amazing impact of constituent materials on constructing supernormal properties of architected materials and will open new avenues for developing high-performance architected metallic materials
Hongshuai Lei - One of the best experts on this subject based on the ideXlab platform.
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3d printing damage tolerant architected metallic materials with shape recoverability via special Deformation design of constituent material
ACS Applied Materials & Interfaces, 2021Co-Authors: Zhiwei Xiong, Shijie Hao, Yong Liu, Lishan Cui, Hong Yang, Chengbo Cui, Daqiang Jiang, Ying Yang, Hongshuai Lei, Yihui ZhangAbstract:Architected metallic materials generally suffer from a serious engineering problem of mechanical instability manifested as the emergence of Localized Deformation bands and collapse of strength. They usually cannot exhibit satisfactory shape recoverability due to the little recoverable strain of metallic constituent material. After yielding, the metallic constituent material usually exhibits a continuous low strain-hardening capacity, giving the local yielded regions of architecture low load resistance and easily developing into excessive Deformation bands, accompanied by the collapse of strength. Here, a novel constituent material Deformation design strategy has been skillfully proposed, where the low load resistance of yielded regions of the architecture can be effectively compensated by the significant self-strengthening behavior of constituent material, thus avoiding the formation of Localized Deformation bands and collapse of strength. To substantiate this strategy, shape-memory alloys (SMAs) are considered as suitable constituent materials for possessing both self-strengthening behavior and shape-recovery function. A 3D-printing technique was adopted to prepare various NiTi SMA architected materials with different geometric structures. It is demonstrated that all of these architected metallic materials can be stably and uniformly compressed by up to 80% without the formation of Localized bands, collapse of strength, and structural failure, exhibiting ultrahigh damage tolerance. Furthermore, these SMA architected materials can display more than 98% shape recovery even after 80% Deformation and excellent cycle stability during 15 cycles. This work exploits the amazing impact of constituent materials on constructing supernormal properties of architected materials and will open new avenues for developing high-performance architected metallic materials.
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3D-Printing Damage-Tolerant Architected Metallic Materials with Shape Recoverability via Special Deformation Design of Constituent Material
'American Chemical Society (ACS)', 2021Co-Authors: Zhiwei Xiong, Shijie Hao, Lishan Cui, Hong Yang, Chengbo Cui, Daqiang Jiang, Ying Yang, Yinong Liu, Hongshuai LeiAbstract:Architected metallic materials generally suffer from a serious engineering problem of mechanical instability manifested as the emergence of Localized Deformation bands and collapse of strength. They usually cannot exhibit satisfactory shape recoverability due to the little recoverable strain of metallic constituent material. After yielding, the metallic constituent material usually exhibits a continuous low strain-hardening capacity, giving the local yielded regions of architecture low load resistance and easily developing into excessive Deformation bands, accompanied by the collapse of strength. Here, a novel constituent material Deformation design strategy has been skillfully proposed, where the low load resistance of yielded regions of the architecture can be effectively compensated by the significant self-strengthening behavior of constituent material, thus avoiding the formation of Localized Deformation bands and collapse of strength. To substantiate this strategy, shape-memory alloys (SMAs) are considered as suitable constituent materials for possessing both self-strengthening behavior and shape-recovery function. A 3D-printing technique was adopted to prepare various NiTi SMA architected materials with different geometric structures. It is demonstrated that all of these architected metallic materials can be stably and uniformly compressed by up to 80% without the formation of Localized bands, collapse of strength, and structural failure, exhibiting ultrahigh damage tolerance. Furthermore, these SMA architected materials can display more than 98% shape recovery even after 80% Deformation and excellent cycle stability during 15 cycles. This work exploits the amazing impact of constituent materials on constructing supernormal properties of architected materials and will open new avenues for developing high-performance architected metallic materials
Stephen Hall - One of the best experts on this subject based on the ideXlab platform.
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fast 4 d imaging of fluid flow in rock by high speed neutron tomography
Journal of Geophysical Research, 2019Co-Authors: Erika Tudisco, Stephen Hall, Maddi Etxegarai, Ellimaria Christodoulos Charalampidou, Gary Douglas Couples, Helen Lewis, Alessandro Tengattini, Nikolay KardjilovAbstract:High‐speed neutron tomographies (1‐min acquisition) have been acquired during water invasion into air‐filled samples of both intact and deformed (ex situ) Vosges sandstone. Three‐dimensional volume images have been processed to detect and track the evolution of the waterfront and to calculate full‐field measurement of its speed of advance. The flow process correlates well with known rock properties and is especially sensitive to the distribution of the altered properties associated with observed Localized Deformation, which is independently characterized by Digital Volume Correlation of X‐ray tomographies acquired before and after the mechanical test. The successful results presented herein open the possibility of in situ analysis of the local evolution of hydraulic properties of rocks due to mechanical Deformation. (Less)
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characterization of fluid flow in a shear band in porous rock using neutron radiography
Geophysical Research Letters, 2013Co-Authors: Stephen HallAbstract:The challenge of understanding how Localized Deformation modifies fluid flow in porous rock is addressed. New approaches are presented, based on neutron radiography and digital image analyses, to track fluid flow in rock specimens and to calculate flow velocity fields providing local flow measurements. The results show that neutron radiography, backed up by appropriate image analysis, is a very powerful tool in this context, being far more sensitive to the fluids in the rock than X-ray radiography. Analysis of neutron radiography images of water imbibition into a laboratory-deformed sandstone specimen has provided new measurements of local fluid flow velocities within a shear band, indicating that flow is faster and water storage is higher in the band (attributed to higher capillary forces associated with damage). (Less)
Ying Yang - One of the best experts on this subject based on the ideXlab platform.
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3d printing damage tolerant architected metallic materials with shape recoverability via special Deformation design of constituent material
ACS Applied Materials & Interfaces, 2021Co-Authors: Zhiwei Xiong, Shijie Hao, Yong Liu, Lishan Cui, Hong Yang, Chengbo Cui, Daqiang Jiang, Ying Yang, Hongshuai Lei, Yihui ZhangAbstract:Architected metallic materials generally suffer from a serious engineering problem of mechanical instability manifested as the emergence of Localized Deformation bands and collapse of strength. They usually cannot exhibit satisfactory shape recoverability due to the little recoverable strain of metallic constituent material. After yielding, the metallic constituent material usually exhibits a continuous low strain-hardening capacity, giving the local yielded regions of architecture low load resistance and easily developing into excessive Deformation bands, accompanied by the collapse of strength. Here, a novel constituent material Deformation design strategy has been skillfully proposed, where the low load resistance of yielded regions of the architecture can be effectively compensated by the significant self-strengthening behavior of constituent material, thus avoiding the formation of Localized Deformation bands and collapse of strength. To substantiate this strategy, shape-memory alloys (SMAs) are considered as suitable constituent materials for possessing both self-strengthening behavior and shape-recovery function. A 3D-printing technique was adopted to prepare various NiTi SMA architected materials with different geometric structures. It is demonstrated that all of these architected metallic materials can be stably and uniformly compressed by up to 80% without the formation of Localized bands, collapse of strength, and structural failure, exhibiting ultrahigh damage tolerance. Furthermore, these SMA architected materials can display more than 98% shape recovery even after 80% Deformation and excellent cycle stability during 15 cycles. This work exploits the amazing impact of constituent materials on constructing supernormal properties of architected materials and will open new avenues for developing high-performance architected metallic materials.
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3D-Printing Damage-Tolerant Architected Metallic Materials with Shape Recoverability via Special Deformation Design of Constituent Material
'American Chemical Society (ACS)', 2021Co-Authors: Zhiwei Xiong, Shijie Hao, Lishan Cui, Hong Yang, Chengbo Cui, Daqiang Jiang, Ying Yang, Yinong Liu, Hongshuai LeiAbstract:Architected metallic materials generally suffer from a serious engineering problem of mechanical instability manifested as the emergence of Localized Deformation bands and collapse of strength. They usually cannot exhibit satisfactory shape recoverability due to the little recoverable strain of metallic constituent material. After yielding, the metallic constituent material usually exhibits a continuous low strain-hardening capacity, giving the local yielded regions of architecture low load resistance and easily developing into excessive Deformation bands, accompanied by the collapse of strength. Here, a novel constituent material Deformation design strategy has been skillfully proposed, where the low load resistance of yielded regions of the architecture can be effectively compensated by the significant self-strengthening behavior of constituent material, thus avoiding the formation of Localized Deformation bands and collapse of strength. To substantiate this strategy, shape-memory alloys (SMAs) are considered as suitable constituent materials for possessing both self-strengthening behavior and shape-recovery function. A 3D-printing technique was adopted to prepare various NiTi SMA architected materials with different geometric structures. It is demonstrated that all of these architected metallic materials can be stably and uniformly compressed by up to 80% without the formation of Localized bands, collapse of strength, and structural failure, exhibiting ultrahigh damage tolerance. Furthermore, these SMA architected materials can display more than 98% shape recovery even after 80% Deformation and excellent cycle stability during 15 cycles. This work exploits the amazing impact of constituent materials on constructing supernormal properties of architected materials and will open new avenues for developing high-performance architected metallic materials
