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Your search keyword '"Firrao, Donato"' showing total 21 results
Start Over Author "Firrao, Donato" Topic microstructure
21 results on '"Firrao, Donato"'

1. Laser Welding between TWIP Steels and Automotive High-Strength Steels

Author

Spena, Pasquale Russo, Rossini, Matteo, Cortese, Luca, Matteis, Paolo, Scavino, Giorgio, Firrao, Donato, Carpenter, John S., editor, Bai, Chenguang, editor, Escobedo, Juan Pablo, editor, Hwang, Jiann-Yang, editor, Ikhmayies, Shadia, editor, Li, Bowen, editor, Li, Jian, editor, Monteiro, Sergio Neves, editor, Peng, Zhiwei, editor, and Zhang, Mingming, editor

Published
2016
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3. Correlation of Microstructure to Mechanical Properties in Two Grades of Alumina

Author

Sano, Tomoko, Buterbaugh, Ian, Walter, Timothy, Catalano, James, Koch, Brendan, Lo, Calvin, Hogan, James, Li, Bowen, editor, Li, Jian, editor, Ikhmayies, Shadia, editor, Zhang, Mingming, editor, Kalay, Yunus Eren, editor, Carpenter, John S., editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Firrao, Donato, editor, Brown, Andrew, editor, Bai, Chenguang, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, Goswami, Ramasis, editor, and Kim, Jeongguk, editor

Published
2018
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4. Automated Optical Serial Sectioning Analysis of Phases in a Medium Carbon Steel

Author

Turner, Bryan, Ganti, Satya, Davis, Bill, Sundar, Veeraraghavan, Li, Bowen, editor, Li, Jian, editor, Ikhmayies, Shadia, editor, Zhang, Mingming, editor, Kalay, Yunus Eren, editor, Carpenter, John S., editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Firrao, Donato, editor, Brown, Andrew, editor, Bai, Chenguang, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, Goswami, Ramasis, editor, and Kim, Jeongguk, editor

Published
2018
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5. Nondestructive Characterization of Microstructures of Heat-Treated Steels by Magnetic Barkhausen Noise Technique

Author

Gür, C. Hakan, Ikhmayies, Shadia, editor, Li, Bowen, editor, Carpenter, John S., editor, Li, JIan, editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, Bai, Chenguang, editor, Kalay, Yunus Eren, editor, Goswami, Ramasis, editor, and Kim, Jeongguk, editor

Published
2017
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6. Effect of Alumina and Magnesia on Microstructure and Mineralogy of Iron Ore Sinter

Author

Zhang, Mingming, Andrade, Marcelo W., Ikhmayies, Shadia, editor, Li, Bowen, editor, Carpenter, John S., editor, Li, JIan, editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, Bai, Chenguang, editor, Kalay, Yunus Eren, editor, Goswami, Ramasis, editor, and Kim, Jeongguk, editor

Published
2017
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7. Investigating the Anisotropic Behaviour of Lean Duplex Stainless Steel 2101

Author

Ameri, A. A. H., Escobedo-Diaz, J. P., Ashraf, M., Quadir, Md. Z., Ikhmayies, Shadia, editor, Li, Bowen, editor, Carpenter, John S., editor, Li, JIan, editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, Bai, Chenguang, editor, Kalay, Yunus Eren, editor, Goswami, Ramasis, editor, and Kim, Jeongguk, editor

Published
2017
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8. Electrical and Microstructural Investigation of Ni0.5Co0.5Cu0.3Zn0.3Mn1.4O4 Temperature Sensors

Author

Hardal, Gökhan, Yüksel Price, Berat, Ikhmayies, Shadia, editor, Li, Bowen, editor, Carpenter, John S., editor, Li, JIan, editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, Bai, Chenguang, editor, Kalay, Yunus Eren, editor, Goswami, Ramasis, editor, and Kim, Jeongguk, editor

Published
2017
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9. Characterization of Low-Zinc Electric Arc Furnace Dust

Author

Peng, Zhiwei, Lin, Xiaolong, Yan, Jiaxing, Hwang, Jiann-Yang, Zhang, Yuanbo, Li, Guanghui, Jiang, Tao, Ikhmayies, Shadia, editor, Li, Bowen, editor, Carpenter, John S., editor, Li, JIan, editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, Bai, Chenguang, editor, Kalay, Yunus Eren, editor, Goswami, Ramasis, editor, and Kim, Jeongguk, editor

Published
2017
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10. Estimation of Dislocation Density in Metals from Hardness Measurements

Author

Ameri, A. A. H., Elewa, N. N., Ashraf, M., Escobedo-Diaz, J. P., Hazell, P. J., Ikhmayies, Shadia, editor, Li, Bowen, editor, Carpenter, John S., editor, Li, JIan, editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, Bai, Chenguang, editor, Kalay, Yunus Eren, editor, Goswami, Ramasis, editor, and Kim, Jeongguk, editor

Published
2017
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11. Metallurgy and Creep Behavior of Type 310S Stainless Steel at High Temperature in Different Atmospheres and Loading Conditions

Author

Parrens, Coralie, Malard, Benoit, Dupain, Jean-Luc, Poquillon, Dominique, Ikhmayies, Shadia Jamil, editor, Li, Bowen, editor, Carpenter, John S., editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Li, Jian, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, and Bai, Chenguang, editor

Published
2016
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15. Methodology for Determining Spall Damage Mode Preference in Shocked FCC Polycrystalline Metals from 3D X-Ray Tomography Data

Author

Brown, A. D., Pham, Q., Peralta, P., Patterson, B. M., Escobedo-Diaz, J. P., Luo, S. N., Dennis-Koller, D., Cerreta, E. K., Byler, D., Koskelo, A., Xiao, X., Ikhmayies, Shadia Jamil, editor, Li, Bowen, editor, Carpenter, John S., editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Li, Jian, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, and Bai, Chenguang, editor

Published
2016
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17. Microstructure Analysis of Buildups Embedded in Carbon Sleeve in Continuous Annealing Furnace for Non-Oriented Silicon Steel

Author

He, Mingsheng, Xue, Gaifeng, Peng, Shoujun, Liu, Meng, Zhou, Wangzhi, Chen, Huasheng, Zhang, Jing, Ikhmayies, Shadia Jamil, editor, Li, Bowen, editor, Carpenter, John S., editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Li, Jian, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, and Bai, Chenguang, editor

Published
2016
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18. Effect of Magnesium Aluminate Spinel Content on Properties of BN Based Composites

Author

Liu, Meng, Song, Yijie, Xu, Xiaohong, Xu, Guotao, Xue, Gaifeng, Liu, Jixiong, Ikhmayies, Shadia Jamil, editor, Li, Bowen, editor, Carpenter, John S., editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Li, Jian, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, and Bai, Chenguang, editor

Published
2016
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19. Effect of Microstructural Anisotropy on the Dynamic Mechanical Behaviour of Rolled Ti-6Al-4V

Author

Lock, A. C. H., Brown, A. D., Blessington, R. A., Appleby-Thomas, G., Quadir, Md. Z., Hazell, P. J., Escobedo, J. P., Ikhmayies, Shadia Jamil, editor, Li, Bowen, editor, Carpenter, John S., editor, Hwang, Jiann-Yang, editor, Monteiro, Sergio Neves, editor, Li, Jian, editor, Firrao, Donato, editor, Zhang, Mingming, editor, Peng, Zhiwei, editor, Escobedo-Diaz, Juan P., editor, and Bai, Chenguang, editor

Published
2016
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21. Failure analysis of a motor vehicle coil spring

Author

Goran Vukelić, Marino Brčić, Iacoviello, Francesco, Susmel, Luca, Firrao, Donato, and Ferro, Giuseppe

Subjects
Engineering, business.industry, 020209 energy, coil spring, spring steel, failure analysis, 02 engineering and technology, Structural engineering, Microstructure, Coil spring, Finite element method, law.invention, Spring steel, 020303 mechanical engineering & transports, 0203 mechanical engineering, Optical microscope, Electromagnetic coil, law, Spring (device), 0202 electrical engineering, electronic engineering, information engineering, Fracture (geology), Composite material, business, Earth-Surface Processes
Abstract

Due to frequent failures of coil springs on a specific type of motor vehicle, analysis of possible causes of failures was performed. Analysis was done on a single coil spring removed from a vehicle after failing in service. Besides visual examination that revealed fracture to happen on a first bottom coil, several other experimental techniques were used in the failure analysis. Using optical microscopy evaluation of the basic microstructure of the fractured surface was performed and possible inclusions distinguished. Detailed scanning electron microscopy (SEM) examination at suitable magnifications was employed to characterize the fine microstructure of the fractured surface and reveal flaws that served as crack initiation points. Optical emission spectrometer with glow discharge source (GDS) sample stimulation was used to determine chemical composition of material used for spring fabrication. Additionally, hardness test was performed. Using results of the performed experimental analysis, possible causes of failure were recognized. Several factors, among them inherent material defect combined with material fatigue and helped by insufficient corrosion protection, caused failure of coil spring. Obtained results are valuable in predicting behaviour of coil springs mounted in other vehicles of the same type and can be taken as a reference in improving future design. Further analysis would include employing finite element method to determine stress levels in undamaged and damaged coil spring along with numerical estimation of fatigue life.

Published
2016
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