Παρακαλώ χρησιμοποιήστε αυτό το αναγνωριστικό για να παραπέμψετε ή να δημιουργήσετε σύνδεσμο προς αυτό το τεκμήριο: https://hdl.handle.net/20.500.14279/4409
Τίτλος: Quantitative impact testing of energy dissipation at surfaces
Συγγραφείς: Constantinides, Georgios 
Tweedie, Catherine A. 
Savva, Nikos 
Smith, James Fielding 
Vliet, Krystyn J. Van 
Major Field of Science: Engineering and Technology
Field Category: Environmental Engineering
Λέξεις-κλειδιά: Energy dissipation;Impact;Nanoindentation;Dynamic hardness;Coefficient of restitution
Ημερομηνία Έκδοσης: Αυγ-2009
Πηγή: Experimental Mechanics, 2009, vol. 49, no. 4, pp. 511-522
Volume: 49
Issue: 4
Start page: 511
End page: 522
Περιοδικό: Experimental Mechanics 
Περίληψη: Impact testing with nanoscale spatial, force, and temporal resolution has been developed to address quantitatively the response of surfaces to impingement of local contact at elevated velocities. Here, an impact is generated by imparting energy to a pendulum carrying an indenter, which then swings towards a specimen surface. The pendulum displacement as a function of time x (t) is recorded, from which one can extract the maximum material penetration x max, residual deformation x r, and indentation durations t in and t out. In an inverse application one can use the x (t) response to extract material constants characterizing the impact deformation and extent of energy absorption, including material specific resistance coefficient C in, coefficient of restitution e, and dynamic hardness H imp. This approach also enables direct access to the ratio H/E, or resilience of the deformed material volume, at impact velocities of interest. The impact response of aluminum was studied for different contact velocities, and the mechanical response was found to correlate well with our one-dimensional contact model. Further experiments on annealed and work hardened gold showed that dynamic hardness H imp scales with contact velocity and highlighted the importance of rate-dependent energy absorption mechanisms that can be captured by the proposed experimental approach.
URI: https://hdl.handle.net/20.500.14279/4409
ISSN: 00144851
DOI: 10.1007/s11340-008-9198-1
Rights: © Springer Nature
Type: Article
Affiliation: Massachusetts Institute of Technology 
Cyprus University of Technology 
Micro Materials Ltd 
Publication Type: Peer Reviewed
Εμφανίζεται στις συλλογές:Άρθρα/Articles

CORE Recommender
Δείξε την πλήρη περιγραφή του τεκμηρίου

SCOPUSTM   
Citations

43
checked on 8 Νοε 2023

WEB OF SCIENCETM
Citations

42
Last Week
0
Last month
2
checked on 29 Οκτ 2023

Page view(s)

547
Last Week
0
Last month
32
checked on 13 Μαρ 2025

Google ScholarTM

Check

Altmetric


Όλα τα τεκμήρια του δικτυακού τόπου προστατεύονται από πνευματικά δικαιώματα