Multi-Material Golf Club Head Face with Composite Perimeter
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Solution Overview
Problem
Existing golf club heads face challenges in achieving a balance between weight reduction, improved Coefficient of Restitution (COR), and durability without compromising the sound and feel, as previous solutions either sacrifice durability or alter the acoustic characteristics.
Innovation Solution
A golf club head design featuring a striking face with a perimeter made of a high-density material and a central pocket filled with a lighter material, optimized for weight savings and durability, while maintaining the acoustic properties through a dual-layered construction and specific geometry that enhances bonding and impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If weight is removed from the striking face to improve COR and distance, then the Coefficient of Restitution increases and ball travel distance improves, but the durability and strength of the striking face deteriorates
Solution Approach 1:
The striking face is constructed using a composite structure combining titanium alloy (for strength and durability) and aluminum alloy (for weight reduction). This multi-material approach allows the face to achieve high COR through reduced mass while the titanium perimeter maintains structural integrity and resistance to deformation under impact loads.
Solution Approach 2:
Different regions of the striking face use different materials optimized for their specific functions: the central impact zone uses lighter aluminum alloy to maximize COR and distance, while the perimeter uses denser titanium alloy to provide structural support and durability. This local differentiation resolves the contradiction between weight reduction and strength maintenance.
2Use of energy by moving object
If weight is removed from the striking face to improve COR, then ball travel distance increases, but the Moment of Inertia (MOI) decreases resulting in less resistance to rotational twisting
Solution Approach 1:
The composite construction with titanium perimeter and aluminum center optimizes the distribution of mass to simultaneously improve COR and maintain MOI. The lighter central area enhances energy transfer for distance, while the dense titanium perimeter provides the mass distribution needed for rotational stability and resistance to twisting on off-center hits.
Solution Approach 2:
The striking face features localized material properties: the center is optimized for energy transfer (lighter material for distance), while the perimeter is optimized for stability (denser material for MOI). This spatial differentiation allows the club to achieve both improved ball travel distance and maintained resistance to rotational twisting.
3Use of energy by moving object
If a thinner striking face is used to increase COR, then energy transfer improves and ball travels farther, but the sound and feel characteristics are altered negatively
Solution Approach 1:
The titanium-aluminum composite construction produces favorable acoustic characteristics through the interaction of different material densities and elastic properties. The titanium perimeter and aluminum center create a specific vibration signature that enhances sound quality and feel, distinguishing it from conventional single-material faces while maintaining thin design for improved energy transfer.
Solution Approach 2:
The multi-material construction changes the physical parameters of the striking face, including density distribution, elastic modulus, and vibrational characteristics. These parameter changes result in improved sound and feel quality compared to conventional thin faces, while the reduced mass maintains high COR and energy transfer efficiency.
4Stability of the object's composition
If weight is added to the rear perimeter to increase MOI, then resistance to rotational twisting improves, but the overall weight of the golf club head increases
Solution Approach 1:
The titanium perimeter provides high-density material concentrated at the extremes where it most effectively increases MOI. This strategic placement of dense material in the composite construction achieves maximum rotational stability with minimal added weight, as the titanium forms the outer boundary of the club head where mass distribution has greatest leverage on MOI.
Solution Approach 2:
The dense titanium material is localized specifically at the perimeter regions where it is most effective for increasing MOI, rather than uniformly distributing weight throughout the club head. This local concentration of mass achieves optimal rotational stability while minimizing overall weight increase, as the titanium perimeter creates lever-arm effects that maximize MOI efficiency.
Data Source
AI summary
A golf club with a multi-material face is disclosed herein. More specifically, the golf club head in accordance with the present invention has a striking face that forms a pocket, wherein the pocket is filled with a secondary material having a lower density to improve the performance of the golf club head. The multi-material face disclosed in accordance with the present invention may generally have a characteristic time slope of greater than about 5 and less than about 50, wherein the characteristic time slope is determined based on the various data points collected according to the United States Golf Association's (USGA's) Characteristic Time (CT) test.