Amorphous Alloy Tamper-Resistant Enclosure Joining
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Solution Overview
Problem
Existing tamper-resistant solutions for electronic devices are difficult to implement effectively, particularly against physical attacks, as they can be vulnerable to various tampering methods such as microprobing, drilling, and physical manipulation.
Innovation Solution
The use of thermoplastic forming of bulk-solidifying amorphous metal alloys to create tamper-resistant joints within enclosures, where the alloys are heated to soften and then shaped to form a strong, permanent bond that is difficult to tamper with, utilizing techniques like resistive, inductive, or radiative heating to confine the heated zone for precise joining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional joining methods are used, then ease of manufacture is improved, but tamper resistance deteriorates
Solution Approach 1:
The patent applies parameter changes by heating the amorphous alloy above its glass transition temperature to soften it, enabling forming operations. This temporary parameter change allows the material to be shaped and joined, then returns to its high-strength amorphous state upon cooling, providing both ease of manufacture and tamper resistance
Solution Approach 2:
The patent uses amorphous alloy material with unique non-crystalline structure that combines the formability of soft materials with the strength of hard materials. This composite-like material structure enables both easy forming during manufacturing and high resistance to tampering in service
2Ease of operation
If amorphous alloy is heated above glass transition temperature, then ease of operation is improved, but strength deteriorates
Solution Approach 1:
The patent employs dynamic properties of amorphous alloys by exploiting the transition between solid and softened states through temperature control. The material dynamically changes its mechanical properties during processing (heating above Tg for forming) and then stabilizes in its high-strength state upon cooling, allowing ease of operation during manufacturing while maintaining strength in final product
Solution Approach 2:
The patent utilizes phase transitions of amorphous alloys, specifically the glass transition, to enable forming operations. By heating above the glass transition temperature, the alloy transitions to a softened, formable state. After shaping, cooling returns it to the rigid, high-strength amorphous state, thus achieving both ease of operation during forming and high strength in the final product
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides a robust and secure sealing mechanism that is resistant to physical tampering, maintaining high strength and elasticity after cooling, making it challenging to separate the joined parts without causing damage, thus enhancing the security of electronic devices.
Implementation Method 1
heating amorphous feedstock, including die cast/injection molded shapes or parts, above its glass transition temperature in order to soften it
Implementation Method 2
The heating process could involve resistive, inductive, radiative, frictional, or other types of heating
Implementation Method 3
The heating process could involve resistive, inductive, radiative, frictional, or other types of heating
Implementation Method 4
The heating process could involve resistive, inductive, radiative, frictional, or other types of heating
Implementation Method 5
The heating process could involve resistive, inductive, radiative, frictional, or other types of heating
Implementation Method 6
it will remain amorphous after it has been cooled back down to room temperature, retaining its extremely high strength, hardness, and elasticity
Data Source
AI summary
A method to form an enclosure or assembly which is fitted together and joined via a thermoplastic forming operation in order to seal the enclosure and hinder attempts to tamper with the contents.