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The Application of Spherical Bend Testing to Predict Safe Working Manufacturing Process Strains

SMTnet Express January 9, 2013, Subscribers: 26086, Members: Companies: 9075, Users: 34138

Technical Library

The Application of Spherical Bend Testing to Predict Safe Working Manufacturing Process Strains

The increased temperatures associated with lead free processes have produced significant challenges for PWB laminates. Newly developed laminates have different curing processes, are commonly filled with ceramic particles or micro-clays and can have higher Tg values. These changes designed to reduce Z-axis expansion and improve the materials resistance to thermal excursions through primary attach and rework operations have also produced harder resin systems with reduced fracture toughness.

First published in the 2012 IPC APEX EXPO technical conference proceedings.

by: John McMahon P.Eng, Brian Gray P.Eng,; Celestica

read article »

Forum search results for related keywords: pad cratering, bend test, mechanical failure

SMT / PCB Products

X5 Professional
Screen Printer X5 Professional Screen Printer

High-performance screen & stencil printer...

by: ASYS Group

FX Series
AOI System
FX Series AOI

Automated in-line PCB inspection...

by: Nordson YESTECH

Stencil Wipes

The best in class stencil treatment technology...

by: Aculon

ProntoTEST-FIXTURE Software

Any CAD/CAE to any ATE...
Download Trial

by: Unisoft

ProtoMat Series
PCB Milling Machine
ProtoMat Series PCB Milling Machine

State-of-the-art rapid PCB prototyping...

by: LPKF Laser & Electronics

PCB Cleaning Agent
HYDRON WS 325 Cleaning and Defluxing Agent

For cleaning water soluble flux residues...


Mark5 Series -
Reflow System
The Mark III Reflow System

Up to 40% reduction in nitrogen consumption...

Offered by: Heller

iineo II Pick & Place System
iineo II Pick & Place

Widely configurable, true 'on the fly' vision...

by: Europlacer

SMT / PCB Equipment Auctions

X-Line Electronic Equipment Auctions

Complete Closure of Well Maintained Contract Manufacturer - Feb. 26 - 27

by: X-Line Asset Management

Electronic Equipment Mart

Vitronics XPM-820
Reflow Oven
Vitronics XPM-820 Reflow Oven

JMW Enterprises

all marketplace listings

MPM AccuFlex
Screen Printer
MPM AccuFlex Screen Printer


all marketplace listings

Agilent SJ50+
Agilent SJ50+ AOI

IBE SMT Equipment

all marketplace listings

Assembleon Topaz Xi
Pick and Place...
Assembleon Topaz Xi Pick and Place

CE Exchange

all marketplace listings

Internet Marketing tip of the week

Sell Your Product by Using the Web as a Research Tool

A few products always seem to sell by themselves online. If they allow for good margins, they are moneymakers. Therefore, those products should be promoted even more through a wide expansion of related terms (different landing pages with each calling for more buying motives).

On the contrary, some "beloved" products may not sell well. The web allows us to test, at almost no expense, different marketing approaches. If after testing all possible approaches, those products still don't sell, invest your love somewhere else, with one restriction: if the web pages for such products are highly visited, then those products can be used as bait.

The SMTnet Power Membership allows you to test different advertising methodologies. This includes includes testing a text ad vs. an image ad with the ability to change your ad on a daily basis (if you wish) to see what works best.

Read more about this program »

Roland Girouard, Managing Director, SMTnet

The marketing team provides internet marketing consulting services for the SMT Industry.

Contact us for more information »

Events Calendar

NEPCON JAPAN 2013 � 42nd Electronics R&D and Manufacturing Technology Expo
Jan. 16., Tokyo, Japan

APEX Expo 2013
Feb. 19., San Diego, CA, USA

Career Center


MPM technician/ field service

Tampa, FL, USA | Cardinal Circuit

Product Manager

Carlsbad, CA, USA | Nordson ASYMTEK

Assembly Division is hiring

Sunnyvale, CA, USA | Sierra Circuits Inc.


Process Engineer

San Diego, CA, USA

Electronic Process Engineer

Brampton, Orlando, Canada

SMT Process Engineering Specialist

Kitchener, Ontario, Canada

Industry Associations Events


SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies. Membership Info | SMTA Certification | Bookstore

Next Event: Webtorial - Design and Assembly Process Challenges for Bottom Terminations Components (BTCs) such as QFN, DFN and MLF in Tin-Lead & Lead Free World - January 15 & 22


IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly. Membership Info | Training & Certification Programs | Standards & Publications - Online Store

Next Event: Printed Board Assembly Cleaning and Contamination Defect FREE webinar - January 10

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

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Capital Equipment Exchange - Used PCB Assembly Equipment

IPC Apex Expo 2013

SP700avi Inline Stencil Printer

Valor MSS Process Preparation

Mirtec Inspection Systems

Insite B Bench Top AOI

NexJet jetting technology

AIM Solder Paste

Aqueous Technologies

Zestron - cleaning products for the SMT industry

Quality Pre-owned PCBA Equipment

PPM - Pre-Owned Quad, MPM Equipment

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