Human-Centric Design Research Laboratory
@ Texas Tech University
 

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RESEARCH INTERESTS

- Human-Centric Engineering
- Bioengineering, Biomechanics, Bio-Inspired Systems
- Spine Biomechanics
- Healthcare Engineering
- Robotics
- Computer-Aided Design and Simulation of Mechanical Systems
- Vehicle Dynamic Systems

  • Human-Centric Engineering

To develop a generic digital human platform for various engineering applications (1) driver seat adjustment prediction; (2) posture prediction; (3) human dynamics; (4) applications for space programs; (5) injury prediction in manufacturing assembly line; (6) visibility prediction; (7) ride comfort assessment; (8) piano player performance

Seated Posture Prediction                                                  

Standing Posture Prediction  

Reach Zone Differentiation

Reach Envelope

 

Hand Modeling

Driver Seat Adjustment Range Determination                   

 

Driver accommodation for pregnant women

Piano Project: Transdisciplinary Research of Academy at Texas Tech University

 

Motion Capture

Neuroscience study of piano play performance through fMRI

Injury Risks in Box Lifting

Micro Physical Environment Factors for Patient Falls

 

 

 

 

 

 

 

         Bioengineering, Biomechanics, Bio-Inspired Systems

The research goal in this area is to develop computer human modules to address: (1) sports biomechanics; (2) ACL biomechanics; (3) biomechanical discomfort model; (4) multibody human dynamics

Seating Balance Prediction

Walking

 

Jumping without arm swing

Jumping with arm swing

 

Shoulder Modeling and Experiment

 

 

Driver and Vehicle Interaction Study

 

 

Simulation-based method

 

Vehicle interior layout

 

Driver model

 

Predicted H-point, eye, and preferred center of the steering wheel locations with the accommodation level of 95%

 

  • Spine Biomechanics

The research goal is to diagnose spine disorders and determine the optimal surgery plan for surgeons to conduct spine surgery.

Healthy Subjects:

(a)                     (b)                         (c)                          (d)                                (e)

Five lumber spine FE models of healthy subjects: (a) 22-year old male, (b) 41-year old male, (c) 47-year old male, (d) 48-year old female, (e) 49-year old female

The mean and standard deviation of IRA in four spinal levels were obtained by the five FE models compared with experimental data (Panjabi et al., 1994) under pure moments (2.5 Nm, 5Nm, 7.5Nm) for flexion (+) and extension (-)

(a)                                                       (b)

The mean and standard deviation of FJF in this study in the L1-L2 and L3-L4 spinal levels were compared with experimental data (Sawa and Crawford, 2008; Niosi et al, 2008; Wilson et al., 2006) with a pure moment of 7.5 Nm in axial rotation and extension directions under: (a) axial rotation and (b) extension

Scoliosis Subjects:

Pre- and post- scoliosis fusion surgery scans FE models of scoliosis spine from T12-S1 level with pedicle screws and rods at L2-S1 an

The intersegmental rotation angle and the intradiscal pressure at level L1-2under five different loads

500N

750N

1000N

1250N

1500N

Right Rotation

Left Rotation

Right Rotation

Left Rotation

Right Rotation

Left Rotation

Right Rotation

Left Rotation

Right Rotation

Left Rotation

Intersegmental Rotation (Degree)

6.465

6.168

6.974

6.654

7.214

7.056

7.694.

7.731

8.915

9.128

Intradiscal Pressure (Mpa)

1.606

1.656

1.729

1.836

1.947

1.918

2.082

2.145

2.315

2.286

Pedicle Screw (N)

79.7

68.5

96.4

86.1

140.5

178.2

284.3

291.7

308.3

352.4

Rod (N)

25.4

28.9

37.5

33.4

46.1

37.7

70.5

62.9

93.4

110.6

 

 

  • Healthcare Engineering

The research goal in this thrust is to develop a discomfort assessment model for personal protective equipment such as helmets, goggles, shoes, clothing, respirators, etc.

 
               


FEM Model for the Face and the N95 Filtering Facepiece Respirator

 

Mouth exhale streamline                         Mouth inhale steamline                    Nose exhale velocity                                         Nose inhale velocity

CFD simulation  for the Face and the N95 Filtering Facepiece Respirator

 

Temperature countours through CFD simulation and Infrared Imaging for leaks

 

 

Rear Effect of Helmet from Bullet

 

Construction Helmet study

 

  • Robotics

The research goal in this thrust is (1) to investigate the kinematic and dynamic aspects of robotics or systems; (2) to synthesize medical devices or medical robots; (3) to develop novel methodologies for motion planning, control and navigation of robots.

   
Hand Prosthesis

 

  • Computer-Aided Design and Simulation of Mechanical Systems

The objective in this area is to develop new methodologies to advance CAD and simulation of mechanisms.


NC Machining Verification                                                        Suspension System

 

  • Vehicle Dynamic System

 

 

 

 

Human-Centric Design Research Lab, Department of Mechanical Engineering, Texas Tech University, Lubbock, TX79409

 

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