Nanoindenter Force Converting Stage

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Transcript Nanoindenter Force Converting Stage

Nanoindenter
Force Converting Stage
Team 15
Erick Camacho
James Caraballo
Patricia Wong
Advisor: Dr. Benjamin Boesl
EML 4905 Senior Design
FIU Department of Mechanical Engineering
Miami, Florida
Outline
1. Problem Statement
2. Motivation and Goals
• Literature Survey
• Survey of Related Standards
• Alternate Designs
• Final Conceptual Design
• Structural Design and Simulation Plan
3. Prototype Design, Construction & Experimentation Plan
• Elements of Global Design Integrated in the Project
• Design Experience
4. Environmental Issues
5. Economic Aspects of the Designed Product
6. Global Awareness, Global Perspective and Global Engagement
7. Life - Long Learning
• Gantt Chart (for two semesters) and Division of Responsibilities
• Conclusions and Future Work
Nanoindenter
● Material testing
● Single compressive
force onto a material
sample
● Nanomaterials
● Nanowires
● Biomaterials
Problem Statement
● Convert vertical compressive force to tensile
force
Motivation & Goals
● Increase the capabilities of material testing
with nanoindenter.
▪
▪
Testing with optical microscope
Does not require high vacuum conditions.
Motivation & Goals
● Explore applications of available 3D printing
capabilities.
Literature Survey
● Nanofabricated
● 3 μm thick polysilicon layer
10 μm
Mechanical Engineering and Materials Science
Department in Rice University
Literature Survey
Ftensile = 0.67 × Fcompressive
10 μm
Mechanical Engineering and Materials Science
Department in Rice University
Standards
1. Knoop and Vickers Hardness of Materials
ASTM E384
ASTM E2546
2. Standard Practice for Indentation Testing
ASTM E2546
3. Standard Guide for Printing Inks
ASTM D5010
ASTM D7188
Alternate Designs
Final Conceptual Design
Flex360 design printed
using NinjaFlex 3D Filament
Final Conceptual Design
Final Conceptual Design
Final Conceptual Design
Final Conceptual Design
Final Conceptual Design
Structural Design and Simulation Plan
● Stress analysis with 0.01 N compressive load
● 0.19 GPA Max stress
Structural Design and Simulation Plan
● Displacement analysis with 0.01 N
● 0.05 mm original separation
Structural Design and Simulation Plan
● 0.343 mm total elongation on testing site
● 686% maximum strain on testing material
Structural Design and Simulation Plan
Calibration using larger sample of known
● Elastic modulus
● Cross sectional area
● Original Length
Material of known E
Structural Design and Simulation Plan
Calibration using larger sample of known
𝑭𝒕
∆𝑳
=𝐄
𝑨
𝑳
∆𝑳 = 𝒇 𝑭𝒄
𝑭𝒕 = 𝒂 ∗ 𝑭𝑪 + 𝒃
Material of known E
Prototype Construction & Testing
● NinjaFlex 3D
Printing Filament
● MakerBot
Replicator 2X
● Approximately 15
minute build time
Prototype Construction & Testing
● Nanoindenter test to compare with design analysis
● Design scale up
● Micro-indenter test
Prototype Construction & Testing
● Nanoindenter test to compare with design analysis
● Design scale up
● Micro-indenter test
Prototype Construction & Testing
Ft = 0.67 × Fc
10 μm
Ft = 0.13 × Fc
Design Experience
● 3D Printing experience
o Tolerances
o Design vs. Manufacturing
“Design is a plan for arranging elements in such
a way as best to accomplish a particular
purpose”
- Charles Eames
Environmental Issues
● No machinery required with 3D printing
● Small impact with discarded designs due to
small size
● Recyclable material
Economic Aspects and Impact
● Increase in testing expands the application
of materials
● Industries advance
Global Awareness
● World-wide pursuit of increasing testing
results
● Global research
● Improving technology for the world
Life Long Learning
● Professional collaboration with engineering
peers
● Advisor-lead research as experience towards
grad school and professional work
● Time Management
● Use of Standards
2014 2015 Timeline
Conclusion & Future Work
● New design
o
o
o
o
simple concept
high manufacturability
inexpensive - does not have to be reused
may be adjusted for designs using other
materials
Conclusion & Future Work
°
● Scale down design
● Nanomanufacturing process
● Material Testing
Special Thanks to
Advisor : Dr. Benjamin Boesl
Dr. Sabri Tosunoglu
Mr. Micheal Enriquez
Mr. Sadegh Behdad
Nanoindenter:
Force Converting Stage
Problem Statement
Questions?
Stage Design
• Convert vertical compressive
Delta
force to tensile force
Challenges
Epsilon
• Produce significant
displacement with small load
• Thin beams that displace but
do not experience large
stress.
Motivation
• Further develop technology for
the testing of nanomaterials
• Further develop the study of
properties of nanomaterials
Preliminary Design Analysis
Objectives
2014-2015 Timeline
θ
• Support load of 5,000 μN
1 set of support beams
θ = 600
• Linear relationship between
applied load and tensile load on
Displacement vs. Support beams
• Elastic deformation on stage
components for re-usability
• Easy to manufacture
• Fails if large load is applied
Maximum Displacement (mm)
material tested
Team Members
3.5
3
2.5
30 deg
2
45 deg
1.5
60 deg
1
0.5
0
1
2
3
4
Pairs of Supporting beams
5
Erick
Camacho
Patricia I.
Wong
James
Caraballo