Timothy W. Simpson Paul Morrow Professor of Engineering Design & Manufacturing

Timothy W. Simpson Paul Morrow Professor of Engineering Design & Manufacturing

Dr. Timothy W. Simpson is the Paul Morrow Professor of Engineering Design & Manufacturing at Penn State University, as well as the co-director of the Center for Innovative Materials Processing through Direct Digital Deposition (CIMP-3D). He is a regular contributor to Additive Manufacturing, and writes the monthly Additive Insights column for Modern Machine Shop.


Basics

What Is Directed Energy Deposition?

Analyzing directed energy deposition and powder-bed fusion provides a thorough understanding of the extra machining necessary for a “near-net shape” versus a “net shape” manufacturing process.

Technology

Additive Manufacturing for Large Parts

Powder-bed fusion is driving the hype for additive manufacturing right now, but it may not be the best answer. Directed energy deposition is a strong contender.

Basics

Options for Finishing and Postprocessing Metal 3D-Printed Parts

There is a host of technologies available for finishing and postprocessing your AM parts. This column identifies options beyond machining.

Basics

Can My Machine Tool Access My Support Structures?

Analyzing the machinability of support structures opens a new way of thinking about optimal build orientation.

Basics

Understanding Surface Finish of Metal 3D-Printed Parts

Additive manufacturing imposes inherent manufacturing and design challenges that impact the dimensions and tolerances that you can (or cannot) achieve on an “as built” part.

Basics

How Machining Support Structures Affects the Cutting Tool

Studies show that thin-walled additively manufactured support structures may be more challenging to machine than they might appear.

Metal AM

How Machinable Are Support Structures in a Metal 3D-Printed Part?

What happens when you cut away thin-walled supports on your metal 3D-printed part?

Basics

Finding the Value Proposition for Additive Manufacturing

Why would anyone want to use additive manufacturing?

Metal AM

Postprocessing Steps and Costs for Metal 3D Printing

When your metal part is done 3D printing, you just pull it out of the machine and start using it, right? Not even close.

Basics

Why Does My 3D-Printed Part Cost So Much?

The machine, the facility and the material are just three costs behind the price tag.

Basics

With Additive Manufacturing, No Tooling Is Required

In conventional manufacturing methods, tooling can easily cost hundreds of thousands of dollars. With AM, you print as needed, no jigs, fixtures or tooling required.

Basics

AM Enables Manufacturing for Design, Not the Other Way Around

Additive manufacturing allows us to make any shape we want, without having to adapt the design for the manufacturing process.