Dr. Jing Du Profile

Dr. Jing Du

at Pennsylvania State Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 24 April 2020 Presentation

Crack growth and fracture toughness in bio-inspired design of dental multilayers (Conference Presentation)

Jing Du

Proceedings Volume 11374, 113740O (2020) https://doi.org/10.1117/12.2557904

KEYWORDS: Biomimetics, Ceramics, Adhesives, Composites, Nanocomposites, Teeth, Polymers, Finite element methods

Read Abstract +

The ceramic dental crowns subjected to occlusal contact forces are often idealized as flat multilayers that are deformed by Hertzian contact loading. These multilayer structures consist of a crown-like ceramic layer on the top, an adhesive layer in the middle and the dentin-like substrate. This study examines the crack growth in the bio-inspired dental multilayers and the fracture toughness for the materials used in the functionally graded materials. A layered structure is fabricated by the sequential depositing of nanocomposite materials with filler fraction and type that changes from the side near the soft composite foundation to the side near the hard ceramic top layer to mimic the dentin–enamel junction in natural teeth. The critical load to failure in these bio-inspired structures are shown to be ~30% greater than those in the conventional layered structures with commercially available dental adhesive materials. The effects of FGM layer thickness and architecture on the contact-induced deformation of bio-inspired dental multilayers are investigated. The combined effects of creep in the adhesive and substrate layers and creep-assisted slow crack growth in the ceramic layer are also studied. The fracture toughness of the polymer-ceramic composites that are relevant to the bio-inspired functionally graded multilayers are measured. The critical loads to failure at various clinically relevant loading rates are shown to be well predicted by a creep-assisted slow crack growth model, which integrates the actual mechanical properties that are obtained from nanoindentation experiments and creep tests and the stress predicted by finite element method and Prony series model. The implications of the results are then discussed for the design of robust dental multilayers.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years