神马文学网泡沫金属
来源：百度文库 编辑：神马文学网 时间：2024/04/27 15:48:27
北卡罗来纳州州立大学研究人员发现了可能是至今强度最大的泡沫金属材料。在负荷下能被压缩到原始大小的80%，但仍然能保持原始形状。这种材料能被用于汽车、防弹衣，甚至建造能吸收地震波的建筑物。
Afsaneh Rabiei博士所创造的泡沫金属，其与众不同之处是细小的蜂窝结构排列非常整齐，使其富有弹性，在压力下不会变形。计算预测，如果她的两片复合泡沫金属插入在汽车保险杠后，那么在车祸中，坐在每小时行驶28英里的汽车内的乘客感觉会和每小时五英里受到的撞击一样。
Researcher Creates Strongest Metal Foam Ever
byBridgette Meinhold, 02/01/10
Spongy metal sounds like a bit of an oxymoron, but it’s actually a realmaterial that is capable of absorbing large impacts without damage. Metal foams have been around for some time, but new research by Dr. Afsaneh Rabiei of North Carolina State University, has revealed the strongest metal foam ever. It can compress up to 80% of its original size under loading and still retain its original shape. The applications for this type of material are too numerous to fathom, but one of the most anticipated uses for the spongy metal is in automobiles to lessen the impact of crashes and protect the driver and passengers.
Metal foam is exactly what you might think – a cellular structure made from metal with tiny pockets of space inside. What makes Rabiei’s metal foam better than others is that she’s been able to make the tiny pockets of space more uniform. And that apparently is what gives it the strength as well as elasticity it needs in order to compress as much as it does without deformation. Many tests are being performed in the laboratory to determine its strength, but so far Rabieisays that thespongy material has “a much higher strength-to-density ratio than any metal foam that has ever been reported.”
Calculations also predict that in car accidents, when two pieces of her composite metal foam are inserted “behind the bumper of a car traveling at 28 mph, the impact would feel the same to passengers as an impact traveling at only 5 mph.” Applications for thisamazing material are numerous and life changing. Naturally, this metal foam could be integrated into the bodies of cars tominimize the impact from crashes, but it could also be used for body armor or even in artificial limbs. It’s even foreseeable that the metal foam could be used in buildings and help absorb shocks from earthquakes.
+ Dr. Afsaneh Rabiei
ViaGizmodo andLiveScience
source:http://www.inhabitat.com/2010/02/01/researcher-creates-strongest-metal-foam-ever/
Dr. Afsaneh Rabiei
Associate ProfessorMechanical and Aerospace Engineering
Associate FacultyBiomedical Engineering
Our Work in The News
Articles Video
NSF Discoveries Science Nation (NEW!)
Live Science NCSU Technology Transfer
The Discovery Files Radio Show
Organizing Conferences/ Workshops
Education & Professional Background
Ongoing Research & Patents
Research Team
Lab Facilities & Equipment
Teaching
Publications
K-12 Activities
Personal
Our new material, steel-steel composite metal foam, can compress up to 80% its original size under loading!
Functionally Graded Hydroxyapatite coatings can give faster patient relief and longevity of biomedical implants
North Carolina State University
Mechanical & Aerospace Engineering
2601 Stinson drive, Campus Box 7910
Raleigh, N.C. 27695-7910
Room #: 2417 Broughton Hall
Office: (919) 513-2674
FAX: (919) 515-7968
Email:arabiei@eos.ncsu.edu
source:http://www.mae.ncsu.edu/homepages/rabiei/
Afsaneh Rabiei博士所创造的泡沫金属，其与众不同之处是细小的蜂窝结构排列非常整齐，使其富有弹性，在压力下不会变形。计算预测，如果她的两片复合泡沫金属插入在汽车保险杠后，那么在车祸中，坐在每小时行驶28英里的汽车内的乘客感觉会和每小时五英里受到的撞击一样。
Researcher Creates Strongest Metal Foam Ever
byBridgette Meinhold, 02/01/10
Spongy metal sounds like a bit of an oxymoron, but it’s actually a realmaterial that is capable of absorbing large impacts without damage. Metal foams have been around for some time, but new research by Dr. Afsaneh Rabiei of North Carolina State University, has revealed the strongest metal foam ever. It can compress up to 80% of its original size under loading and still retain its original shape. The applications for this type of material are too numerous to fathom, but one of the most anticipated uses for the spongy metal is in automobiles to lessen the impact of crashes and protect the driver and passengers.
Metal foam is exactly what you might think – a cellular structure made from metal with tiny pockets of space inside. What makes Rabiei’s metal foam better than others is that she’s been able to make the tiny pockets of space more uniform. And that apparently is what gives it the strength as well as elasticity it needs in order to compress as much as it does without deformation. Many tests are being performed in the laboratory to determine its strength, but so far Rabieisays that thespongy material has “a much higher strength-to-density ratio than any metal foam that has ever been reported.”
Calculations also predict that in car accidents, when two pieces of her composite metal foam are inserted “behind the bumper of a car traveling at 28 mph, the impact would feel the same to passengers as an impact traveling at only 5 mph.” Applications for thisamazing material are numerous and life changing. Naturally, this metal foam could be integrated into the bodies of cars tominimize the impact from crashes, but it could also be used for body armor or even in artificial limbs. It’s even foreseeable that the metal foam could be used in buildings and help absorb shocks from earthquakes.
+ Dr. Afsaneh Rabiei
ViaGizmodo andLiveScience
source:http://www.inhabitat.com/2010/02/01/researcher-creates-strongest-metal-foam-ever/
Dr. Afsaneh Rabiei
Associate ProfessorMechanical and Aerospace Engineering
Associate FacultyBiomedical Engineering
Our Work in The News
Articles Video
NSF Discoveries Science Nation (NEW!)
Live Science NCSU Technology Transfer
The Discovery Files Radio Show
Organizing Conferences/ Workshops
Education & Professional Background
Ongoing Research & Patents
Research Team
Lab Facilities & Equipment
Teaching
Publications
K-12 Activities
Personal
Our new material, steel-steel composite metal foam, can compress up to 80% its original size under loading!
Functionally Graded Hydroxyapatite coatings can give faster patient relief and longevity of biomedical implants
North Carolina State University
Mechanical & Aerospace Engineering
2601 Stinson drive, Campus Box 7910
Raleigh, N.C. 27695-7910
Room #: 2417 Broughton Hall
Office: (919) 513-2674
FAX: (919) 515-7968
Email:arabiei@eos.ncsu.edu
source:http://www.mae.ncsu.edu/homepages/rabiei/