R&D Center

The R&D Center fosters employees who strives to elevate Seoyon E-Hwa into World Class Auto Parts Supplier.

Research & Development Strategy


ES Test room
MS Test room
Show Room
Sensitivity design research room
Anechoic room
Benchmarking room
Planning room
Start room
Research & development status room

Research Area

Product Design System

Process Research

Seoyon E-Hwa is a leading company in total interior parts for automobiles, and thus, manufacturing methods are integral to our success. Manufacturing process includes mold making, forming, assembly and application of the above to mass production.

Material Research

Material Development Trends

New Material Development (Process)

1) Review new material and
establish development plan
2) Assess material and produce sample
3) Environmental testing
4) Final technical evaluation
5) Revise and apply material specifications
to part drawing
6) Apply to mass production


At each stage in the development process, Seoyon E-Hwa is carrying out pre-verification activity such as analysis, assembly verification, assessment of harmful factors etc. on parts by means of ‘CAE’ and ‘DPA’ technology. After part development, we aim to minimize potential failure cost through ‘BSR assessment’, ‘ES testing, ‘side impact testing’.

Applied field and effect

1. CAE(Computer Aided Engineering)
1) Structure and dynamic interpretation
- Analysis of flexural/torsional/modal characteristics of door trims, bumpers, pillars, and seats
- Analysis of static stiffness and non-linear strength of various parts to prevent vibration noise etc.
- Optimization of head lining & pillar trim structure for FMH satisfaction
2) Flow Analysis
- Analysis of optimal molding conditions through gate position and clamp force examination
- Analysis of cooling channel optimization for optimum cooling temperature and minimization of cycle time
- Improvement of product surface problems (BURR, WELDLINE, SINK, FLOW, SILVER etc.)
2. DPA(Digital Pre-Assembly)
- Verification of assembly : Planning data quality improvement through verification of data and tool interference/part workability
- Assessment of harmful factors: Prevention of musculoskeletal disorder through workability assessment when assembling parts
3. Test & Evaluation
- BSR assessment : Structure optimization for minimization of squeak & rattle noise
- ES test : Interpretation of vibration for avoiding resonance of interior part and suspension seat
- Side Impact test : Door trim and IP & seat structure optimization for securing impact safety

BSR assessment

ES test

Side Impact test


- Vision model development.
- Joint projects with clients.
- Design proposals for clients.
Ideation and Concept
Research and idea -generation
Requirement analysis
Design and Styling
CAS modeling
Real-time visualization
Studio Engineering
Clay modeling
Hard modeling
1:1 scaled modeling

Research Performance

Industrial Property Rights

How to manufacture of automotive interior material
EB-curable TPO sheet manufacture method
Head liner assembling device of car sunroof
Partial-binding molder of vehicle’s interior part decoration
Horizontal molding method and apparatus of interior material of vehicle
Multilayer structure for vehicle interior material, and method for manufacturing
Weather-strip assembly for vehicle
Seat elevation control apparatus for vehicle
Height-controller for vehicle seat
Head rest module for vehicle
- and over 900 applications and 450 registrations

Research Paper

Building Virtual Design Validation Process Case Study of Door Trim (EAEC 2011)
Case Studies of Verifying Design Quality for Automotive Interior Parts
by Dynamic DPA Simulation (Korean Society of Automotive Engineers 2011)
A Study on the Effectiveness of the Door Trim BSR Test Methods (FISITA 2010)
Simple Test Method for Squeak & Rattle Evaluation of Door Trim by Using Statically Repeated Loading Robot Arm (SAE 2009)
Seat Mechanism for Maintaining Tumble Position of Seat In Rearward Impact of Vehicle (Korean Society of Automotive Engineers 2011)
Simplified side impact test methodologies for door interior trim armrest in automotive vehicle (APAC 2007)
- and over 40 thesis presentations